DIMETHYL UREA (Dimetil re)
Dimethyl Urea (Dimetil Üre)
CAS NO: 669053-48-9
IUPAC systematic name: 1,3-Dimethyl urea
SYNONYM: Dimethyl urea ; Dimetil üre; 1,3-Dimethyl urea; Dimetil üre; Di Metil Üre; N,N`-Dimethyl urea; Urea, N,N`-Dimethyl; N,N Dimetil üre; Cas No : 96-31-1; 1,3-DMETHYL UREA; N,N’-Dimethyl urea ;96-31-1; sym-Dimethyl urea; Urea, N,N’-dimethyl-; Symmetric Dimethyl urea; Urea, 1,3-dimethyl- ;N,N’-Dimethylharnstoff; Dimetil üre; 1,3-Dimethyl urea ; N,N’-Dimethylharnstoff [German] ;UNII-WAM6DR9I4X; NSC 14910; BRN 1740672; CCRIS 2509; AI3-24386; HSDB 3423; EINECS 202-498-7; MFCD00008286; WAM6DR9I4X; 1,3-Dimethyl urea, 98%; CHEBI:80472; Dimetil üre; Urea,3-dimethyl-; Urea,N’-dimethyl-; WLN: 1MVM1; Dimethylharnstoff; 1.3; Dimethyl urea; Dimetil üre; N,N-Dimethyl-Urea; 1,3 Dimethyl urea ; N,N’-Dimethyl urea ; N,N’-Dimethyl urea; 1,1′-Dimethyl urea; 1,3-Dimethylcarbamide; 1,3-Dimethylharnstoff; 1,3-Dimethyl urea ; 1,3-Diméthylurée ; 202-498-7; 04-00-00207 ; 96-31-1 ; DMU; MFCD00008286 ; N,N′-Dimethyl urea ; N,N′-Dimethyl urea ;N,N’-Dimethyl urea; sym-Dimethyl urea; Symmetric Dimethyl urea; Urea, 1,3-dimethyl-; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO; AKOS B029718; 1.3-DiMethyl u; SYM-DMETHYL UREA; 1,3-dimethyl-ure; 1,3-DMETHYL UREA; N,N’-DMETHYL UREA; n,n’-dimethyl-ure; Dimethylcarbamide; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; 1,1-Diméthylurée; DIMETL ÜRE; DIMETHYL UREA; Urea, N,N-dimethyl; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO; AKOS B029718; 1.3-DiMethyl u;SYM-DMETHYL UREA; 1,3-dimethyl-ure;1,3-DMETHYL UREA;N,N’-DMETHYL UREA;n,n’-dimethyl-ure;Dimethylcarbamide; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO;AKOS B029718;1.3-DiMethyl u;SYM-DMETHYL UREA;1,3-dimethyl-ure;1,3-DMETHYL UREA;N,N’-DMETHYL UREA;n,n’-dimethyl-ure;Dimethylcarbamide; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO;AKOS B029718;1.3-DiMethyl u;SYM-DMETHYL UREA;1,3-dimethyl-ure;1,3-DMETHYL UREA;N,N’-DMETHYL UREA;n,n’-dimethyl-ure;Dimethylcarbamide; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; Urea, N,N’-dimethyl- ; YS9868000; (CH3NH)2CO; 1,3-Dimethyl urea ; Dimetil üre; 1,3-Dimethyl-urea; Dimethyl urea; Dimethyl urea, 1,3-; n,n’-Dimethyl urea; N,N’-Dimethyl urea ; N,N’-dimethyl-urea; CARBAMIDE; CARBAMIDIC ACID; CARBONYL DIAMIDE; 1, 3-DMETHYL UREA; N, N -DMETHYL UREA, SYM-DMETHYL UREA; UREA, N, N -DIMETHYL-; SYMMETRIC DMETHYL UREA; N,N’-Dimethyl urea ；1,3-Dimethyl urea；N,N’-dimethyl-Urea；1,3-dimethyl-ure；n,n’-dimethylharnstoff；n,n’-dimethylharnstoff (german)；n,n’-Dimethyl urea；sym-Dimethyl urea; Dimethyl urea ; 1,1-Dimethyl urea; 1,3-Dimethyl urea; N,N-Dimethyl urea; N,N’-Dimethyl urea; N,N-Dimethylolurea; Dimetil üre; 1,1-Dimethyl-d6-urea; 1,3-Dimethylthiourea; N,N-Dimethylthiourea; N,N’-Dimethylthiourea; 1,1-Dimethyl-thiourea; Dimethylpropyleneurea; 2,4-Dimethylphenylurea; N,N-Dimethylselenourea; Dimethylthiourea (DMTU); sym-diméthylurée; N,N’-diméthylurée; DMU; 1,1-Dimethylharnstoff; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO; AKOS B029718; 1.3-DiMethyl u; SYM-DMETHYL UREA; 1,3-dimethyl-ure; 1,3-DMETHYL UREA; N,N’-DMETHYL UREA; n,n’-dimethyl-ure; Dimethylcarbamide; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO;AKOS B029718; 1.3-DiMethylu; ; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dmethyl urea; Dimetil üre; dimethyl ürea; dmethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; Dimetil üre; DIMETL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dmethyl urea; (CH3NH)2CO;AKOS B029718;1.3-DiMethyl u;SYM-DMETHYL UREA;1,3-dimethyl-ure;1,3-DMETHYL UREA;N,N’-DMETHYL UREA;n,n’-dimethyl-ure; Dimethylcarbamide; Dimethyl urea (DMU; Uses; 1,3-Dimethyl urea; DIMETHYL UREA; dmethyl urea; Dimetil üre; 3k3g; DSSTox_CID_5156; Dimetil üre; ACMC-209s6t; bmse000248; EC 202-498-7; UREA,1,3-DIMETHYL ; (CH3NH)2CO; DSSTox_RID_77691; DSSTox_GSID_25156; N,N’-Dimethyl urea, ~98%; CHEMBL1234380; DTXSID5025156; CTK3I6635; KS-00000C9H; NSC14910; NSC24823; Dimetil üre; ZINC1653257; Tox21_200794; ANW-40803; Dimetil üre; BBL011513; NSC-14910; NSC-24823; STL146629; AKOS000120912; CS-W013749; LS-2007; MCULE-5319497155; NE10567; CAS-96-31-1; NCGC00248834-01; Dimetil üre; NCGC00258348-01; AK209010; K738; SC-15870; SY004507; N,N inverted exclamation mark -Dimethyl urea; A4569; D0289; FT-0606700; Dimetil üre; NS00005754; C16364; ethyl 5-oxo-2,3-diphenyl-cyclopentanecarboxylate; N,N’-Dimethyl urea, (sym.), >=99% (from N); Q419740; W-100145; N,N’-Dimethyl urea, PESTANAL(R), analytical standard; F0001-2292; N,N’; Dimethyl urea, (sym.), >=95.0% (HPLC), technical; Urea, 1,3-dimethyl-;1,3-Dimethyl urea;N,N’-Dimethyl urea; dmetilure; dmethylurea; dmetil urea; dmetil üre; dimetil urea; dmetilürea; dimetiürea; dimetil ürea; ürea dmetyl; dimethyl ürea; dimethyl üre; dimethyl ure;
Dimethyl urea
Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis. Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea is used for synthesis of herbicides and others. In the textile processing industry Dimethyl urea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. ). Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis. The estimated world production of Dimethyl urea is estimated to be less than 25,000 tons.
CAS Number of Dimethyl urea 96-31-1
ChEBI of Dimethyl urea CHEBI:80472
ChemSpider of Dimethyl urea 7021
ECHA InfoCard of Dimethyl urea 100.002.272
KEGG of Dimethyl urea C16364
MeSH of Dimethyl urea 1,3-Dimethyl urea
PubChem CID of Dimethyl urea 7293
RTECS number of Dimethyl urea YS9868000
UNII of Dimethyl urea WAM6DR9I4X
CompTox Dashboard (EPA) of Dimethyl urea DTXSID502
Chemical formula of Dimethyl urea C3H8N2O
Molar mass of Dimethyl urea 88.110 g·mol−1
Appearance of Dimethyl urea Colorless, waxy crystals
Odor of Dimethyl urea Odorless
Density of Dimethyl urea 1.142 g mL−1
Melting point of Dimethyl urea 104.4 °C; 219.8 °F; 377.5 K
Boiling point of Dimethyl urea 269.1 °C; 516.3 °F; 542.2 K
Solubility in water of Dimethyl urea 765 g L−1
Magnetic susceptibility (χ) of
Dimethyl urea -55.1·10−6 cm3/mol
Dimethyl urea is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, Dimethyl urea can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx). Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea is used for synthesis of herbicides and others. In the textile processing industry Dimethyl urea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles.
Dimethyl urea (DMU) (1,3-Dimethyl urea , methylcarbamide) is a colourless solid and Dimethyl urea is a non-volatile, versa-tile and powerful reagent for the synthesis of nitrogen-containing heterocyclic compounds. Dimethyl urea is used for the syn-thesis of caffeine, theophylline, pharmaceuticals, textileaids, herbicides, etc. Dimethyl urea also finds application in metal-ioncomplexation, material science, etc. In 1954, Blick andGodt synthesized the important building block Dimethyl urea uracil from a mixture of Dimethyl urea, cy-anoacetic acid, and acetic anhydride with exclusion ofmoisture under stirring at 60 °C for 3 h.1 Dimethyl urea is a very im-portant starting material for the synthesis of pyrimidinederivatives. This invention, relates to the preparation of ureas and more particularly to the preparation of Dimethyl urea . Among the objects of this invention are the provision of efficient methods for preparing Dimethyl urea ; the provision of methods of the type indicated which may be easily carried out; the provision of methods of the type referred to which utilize relatively inexpensive reaction media; and the provision of methods of the type indicated which produce a high yield of Dimethyl urea . Other objects will be in part apparent and in part pointed out hereinafter. The reaction product consisted of a solution of Dimethyl urea containing some sodium chloride in suspension. The reaction mixture weighed 155 pounds and analysis showed that it contained 24 pounds of Dimethyl urea having a freezing point of 101″ C. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids,This corresponds to a yield of 90% of theoretical based on the methyl amine used as starting material. It was found further that the reaction mixture contained about 10% of unreacted methyl amine which could be recovered and re-used by appropriate procedures.Taking into account the recovered methyl amine, the yield of Dimethyl urea was practically theoretical.For the recovery of Dimethyl urea , the solution may be concentrated and freed of water as by heating under reduced pressure. The dry mixture may be extracted with a hot solvent, such as chloroform, benzene, or anhydrous alcohol, to separate the Dimethyl urea from the salt.The Dimethyl urea may be recovered from the solvent by volatilizing the solvent or by crystallizing under appropriate conditions. ). Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a urea derivative and used as an intermediate in organic synthesis. Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a urea derivative and used as an intermediate in organic synthesis. Example 2 Materials were combined in the same manner and proportions as described in Example 1 except that the temperature of the reaction was maintained at 30-35° C. and an excess of phosgene amounting to 5.5% was employed. The product was shown by analysis to contain 81% of the theoretical amount of Dimethyl urea and 14% of unreacted methyl amine. The Dimethyl urea was contaminated by by-products so that the crude material had a freezing point of 89.9″ C. The Dimethyl urea can be recovered as-described in Example 1, but the crude product obtained under these conditions usually was less pure. The method of preparing Dimethyl urea which comprises reacting methyl amine and not substantially in excess of the theoretical proportion of phosgene in an aqueous medium and adding a caustic alkali to the aqueous solution. claim: 1. The method of preparing Dimethyl urea which comprises reacting methyl amine and not substantially in excess of the theoretical proportion of phosgene in an aqueous medium and adding a caustic alkali to the aqueous solution.2. The method of preparing Dimethyl urea which comprises mixing not substantially in excess of the theoretical proportion of gaseous phosgene and an aqueous solution of methyl amine and adding a caustic alkali to the aqueous solution.3. The method of making Dimethyl urea which comprises bubbling not substantially in excess of the theoretical proportion of gaseous phosgene into an aqueous solution of methyl amine and adding a caustic alkali to the aqueous solution. 4. The method of making Dimethyl urea which comprises mixing not substantially in excess of the theoretical proportion of gaseous phosgene with an aqueous solution of methyl amine and neutralizing the acid formed by the reaction by adding a caustic alkali to the reaction mixture.5. Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis. Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea is used for synthesis of herbicides and others. In the textile processing industry Dimethyl urea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis.Dimethyl urea uracil from a mixture of Dimethyl urea, cy-anoacetic acid, and acetic anhydride with exclusion ofmoisture under stirring at 60 °C for 3 h.1 Dimethyl urea is a very im-portant starting material for the synthesis of pyrimidinederivatives. This invention, relates to the preparation of ureas and more particularly to the preparation of Dimethyl urea . Among the objects of this invention are the provision of efficient methods for preparing Dimethyl urea ; the provision of methods of the type indicated which may be easily carried out; the provision of methods of the type referred to which utilize relatively inexpensive reaction media; and the provision of methods of the type indicated which produce a high yield of Dimethyl urea . Other objects will be in part apparent and in part pointed out hereinafter. The reaction product consisted of a solution of Dimethyl urea containing some sodium chloride in suspension. The reaction mixture weighed 155 pounds and analysis showed that it contained 24 pounds of Dimethyl urea having a freezing point of 101″ C. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids,This corresponds to a yield of 90% of theoretical based on the methyl amine used as starting material. It was found further that the reaction mixture contained about 10% of unreacted methyl amine which could be recovered and re-used by appropriate procedures.Taking into account the recovered methyl amine, the yield of Dimethyl urea was practically theoretical.For the recovery of Dimethyl urea , the solution may be concentrated and freed of water as by heating under reduced pressure. The dry mixture may be extracted with a hot solvent, such as chloroform, benzene, or anhydrous alcohol, to separate the Dimethyl urea from the salt.The Dimethyl urea may be recovered from the solvent by volatilizing the solvent or by crystallizing under appropriate conditions. ). Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a urea derivative and used as an intermediate in organic synthesis. Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea is a urea derivative and used as an intermediate in organic synthesis. Example 2 Materials were combined in the same manner and proportions as described in Example 1 except that the temperature of the reaction was maintained at 30-35° C. and an excess of phosgene amounting to 5.5% was employed. The product was shown by analysis to contain 81% of the theoretical amount of Dimethyl urea and 14% of unreacted methyl amine. The Dimethyl urea was contaminated by by-products so that the crude material had a freezing point of 89.9″ C. The Dimethyl urea can be recovered as-described in Example 1, but the crude product obtained under these conditions usually was less pure. The method of preparing Dimethyl urea which comprises reacting methyl amine and not substantially in excess of the theoretical proportion of phosgene in an aqueous medium and adding a caustic alkali to the aqueous solution. claim: 1. The method of preparing Dimethyl urea which comprises reacting methyl amine and not substantially in excess of the theoretical proportion of phosgene in an aqueous medium and adding a caustic alkali to the aqueous solution.2. The method of preparing Dimethyl urea which comprises mixing not substantially in excess of the theoretical proportion of gaseous phosgene and an aqueous solution of methyl amine and adding a caustic alkali to the aqueous solution.3. The method of making Dimethyl urea which comprises bubbling not substantially in excess of the theoretical proportion of gaseous phosgene into an aqueous solution of methyl amine and adding a caustic alkali to the aqueous solution. 4. The method of making Dimethyl urea which comprises mixing not substantially in excess of the theoretical proportion of gaseous phosgene with an aqueous solution of methyl amine and neutralizing the acid formed by the reaction by adding a caustic alkali to the reaction mixture.5. Dimethyl urea alkyl urea derivative, is a nonlinear organic material. Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis. Dimethyl urea is a colorless crystalline powder with little toxicity Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea is used for synthesis of herbicides and others. In the textile processing industry Dimethyl urea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. Dimethyl urea is used for synthesis of caffeine, Dimethyl urea is used for synthesis of theophylline, Dimethyl urea is used for synthesis of pharmachemicals, Dimethyl urea is used for synthesis of textile aids, Dimethyl urea forms needle-shaped crystals. Dimethyl urea has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl urea crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. , Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals. Dimethyl urea may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones . Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis
Dimethyl urea (DMU) (1,3-Dimethyl urea , methylcarbamide) is a colourless solid and Dimethyl urea is a non-volatile, versa-tile and powerful reagent for the synthesis of nitrogen-containing heterocyclic compounds. Metabolite Identification
Dimethyl urea(DMU) (IUPAC systematic name: 1,3-Dimethyl urea) is a urea derivative and used as an intermediate in organic synthesis. Dimethyl ureais a colorless crystalline powder with little toxicity
Dimethyl urea is used for synthesis of caffeine, theophylline, pharmachemicals, textile aids, herbicides and others.[2] In the textile processing industry 1,3-Dimethyl ureais used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. The estimated world production of DMU is estimated to be less than 25,000 tons.
Experimental procedure: An electrochemical cell with magnesium as the anode and galvanized steel wire as the cathode is added to a substrate (0.1 mmol, 1.0 eq.), 1,3-Dimethyl urea(0.3 mmol, 3.0 eq), tripyrrolidinophosphine oxide (1.0 mmol, 10 eq.), and 1.5 mol/L THF solution of LiBr (500 µL). The reaction mixture is added to THF (3 mL) and is purged with argon. Electrolysis is initiated at a cell ampere of 10 mA at room temperature. After full consumption of substrate, the cell is washed with diethyl ether, and solvent is removed in vacuo. To residue solution is added diethyl ether and solution of Rochelle salt, and then is stirred until two clear layers formed. The organic layer is separated, and the aqueous layer is extracted twice with diethyl ether. The combined organic layers are dried over anhydrous MgSO4. After the organics removed in vacuo, the residue is purified by short silica colum (elution: ethyl acetate) to give product.
Catalogue Number 803244
Synonyms 1,3-Dimethyl urea
Description N,N’-Dimethyl urea
Common Name Dimethyl urea
Description Dimethyl ureabelongs to the class of organic compounds known as ureas. Ureas are compounds containing two amine groups joined by a carbonyl (C=O) functional group. Dimethyl ureais an extremely weak basic (essentially neutral) compound (based on its pKa). Dimethyl urea(DMU) (IUPAC systematic name: Dimethyl urea) is a urea derivative and used as an intermediate in organic synthesis.
Description belongs to the class of organic compounds known as ureas. Ureas are compounds containing two amine groups joined by a carbonyl (C=O) functional group.
Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis. It is a colorless crystalline powder with little toxicity. 1,3-Dimethyl urea is used for synthesis of caffeine, theophylline, pharmachemicals, textile aids, herbicides and others.[2] In the textile processing industry 1,3-Dimethyl urea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. The estimated world production of DMU is estimated to be less than 25,000 tons. N,N′-Dimethyl urea (1,3-Dimethyl urea), an alkyl urea derivative,[3] is a nonlinear organic material.[4] It forms needle-shaped crystals. It has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl ureas crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. Dimethyl urea is the suitable reagent used to investigate the polar structure of its crystals.[1] It may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones. Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 40410.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit.-Dimethyl urea (1,3-Dimethyl urea), an alkyl urea derivative,[3] is a nonlinear organic material.[4] Dimethyl urea forms needle-shaped crystals. It has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethyl ureas crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. Dimethyl urea is used for the syn-thesis of caffeine, theophylline, pharmaceuticals, textileaids, herbicides, etc. Dimethyl urea also finds application in metal-ioncomplexation, material science, etc. The method of making Dimethyl urea which comprises bubbling not substantially in excess of the theoretical proportion of phosgene into an aqueous solution of methyl amine and simultaneously neutralizing the acid formed by the reaction by adding a caustic alkali.6. The method of making Dimethyl urea which comprises mixing together phosgene and an aqueous solution of methyl amine, said phosgene being added in not substantially more than the theoretical proportion and said mixing being carried out at a temperature not substantially above 500 C., while agitating the mixture, and neutralizing the acid formed by the reaction by adding to the reaction mixture while the reaction is taking place a caustic alkali at such a rate that at no time during the progress of the reaction is there a substantial excess of caustic present.7. The method of making Dimethyl urea which comprises simultaneously introducing into an aqueous medium, gaseous phosgene and methyl amine, said phosgene being introduced in not substantially more than the theoretical proportion, maintaining the aqueous medium at a temperature not substantially above 50° C. Dimethyl urea is a derivative of urea and is used as an intermediate in organic synthesis. Dimethyl urea It is a colorless crystalline powder with little toxicity. Dimethyl urea is a laboratory chemical. Dimethyl urea Used in a variety of experiments. Dimethyl urea is an organic compound that resembles urea formed by the replacement of the oxygen atom of urea with the sulfur atom. Dimethyl urea Soluble in water and alcohol. Dimethyl urea is in colorless crystalline powder form used in organic synthesis. Dimethyl urea has a low toxicity value.
Dimetil üre
Dimetil üre bir üre türevidir ve organik sentezde bir ara madde olarak kullanlr. Dimetil üre Az toksisiteye sahip renksiz bir kristal tozdur. Dimetil üre Laboratuvar kimyasaldr. Dimetil üre Çeitli deneylerde kullanlr. Dimetil üre alkil üre türevi, dorusal olmayan organik bir materyaldir. Dimetil üre, ine eklinde kristaller oluturur. Dimetil üre, buhar difüzyon teknii ile etilasetat (solvent) ve heptan (çökeltici) kullanlarak kristalize edilmitir. Dimetil üre kristalleri, her asimetrik birimde bir moleküle sahiptir. Kristaldeki moleküller, hidrojen balar ile balanr. Dimetil üre, kristallerinin polar yapsn aratrmak için kullanlan uygun reaktiftir. Dimetil üre, Dowex-50W iyon deiim reçinesi ile desteklenen, N, N′-iki ikameli-4-aril-3,4-dihidropirimidinonlarn çözücüsüz sentezinde kullanlabilir. Dimetil üre (DMU) (IUPAC sistematik ad: 1,3-Dimetil üre) bir üre türevidir ve organik sentezde bir ara ürün olarak kullanlr. Dimetil üre, az toksisiteye sahip renksiz bir kristal tozdur. Dimetil üre, kafein sentezinde, Dimetil üre, teofilin sentezinde, Dimetil üre, eczaclkta kullanlan kimyasallarn sentezinde, Dimetil üre, herbisitlerin sentezinde kullanlr ve dierleri. Tekstil ileme endüstrisinde Dimetil üre, tekstiller için formaldehit içermeyen bakm kolay apre maddelerinin üretiminde ara ürün olarak kullanlr. Dimetil üre ‘nn tahmini dünya üretiminin 25.000 tondan az olduu tahmin edilmektedir.
CAS Dimetil üre Says 96-31-1sd
Dimetil üre ChEBI CHEBI: 80472
Dimetil üre ChemSpider 7021
Dimetil üre ECHA Bilgi Kart 100.002.272
Dimetil üre KEGG C16364
Dimetil üre MeSH 1,3-Dimetil üre
Dimetil üre’nn PubChem CID’si 7293
Dimetil üre’nin RTECS says YS9868000
Dimetil üre UNII WAM6DR9I4X
Dimetil üre CompTox Dashboard (EPA) DTXSID502
Dimetil üre C3H8N2O kimyasal formülü
Dimetil üre molar kütlesi 88.110 g · mol − 1
Dimetil üre’nin Görünüü Renksiz, mumsu kristaller
Dimetil üre Kokusu Kokusuz
Dimetil üre younluu 1.142 g mL-1
Dimetil üre’nin erime noktas 104.4 ° C; 219,8 ° F; 377,5 K
Dimetil üre kaynama noktas 269.1 ° C; 516,3 ° F; 542,2 K
Dimetil üre suda çözünürlük 765 g L − 1
Dimetil üre’nin manyetik duyarll (χ) -55.1 · 10−6 cm3 / mol
Dimetil üre bir amiddir. Amidler / imidler, toksik gazlar oluturmak için azo ve diazo bileikleriyle reaksiyona girer. Organik amidlerin / imidlerin güçlü indirgeyici maddelerle reaksiyonu sonucu yanc gazlar oluur. Amidler çok zayf bazlardr (sudan daha zayf). midler henüz daha az baziktir ve aslnda tuz oluturmak için güçlü bazlarla reaksiyona girer. Yani Dimetil üre asitler olarak reaksiyona girebilir. Amidlerin P2O5 veya SOCl2 gibi dehidrasyon ajanlar ile kartrlmas, ilgili nitrili üretir. Bu bileiklerin yanmas, kark nitrojen oksitleri (NOx) üretir. Dimetil üre (DMU) (1,3-Dimetil üre , metilkarbamid) renksiz bir katdr ve Dimetil üre, nitrojen içeren heterosiklik bileiklerin sentezi için uçucu olmayan, tam tersi ve güçlü bir reaktiftir. Dimetil üre, kafein, teofilin, farmasötikler, tekstil yardmclar, herbisitlerin sentezi için kullanlr. Dimetil üre ayrca metal iyon kompleksi, malzeme bilimi, vb. Alanlarda da uygulama bulur. 1954’te Blick ve Godt, önemli yap ta Dimetil üre urasili bir karmdan sentezledi. DMU, siy-anoasetik asit ve asetik anhidrit, 3 saat boyunca 60 ° C’de kartrma altnda nem içermeyen asetik anhidrit. . Dimetil üre bir laboratuvar kimyasaldr. Dimetil üre Çeitli deneylerde kullanlmtr. Dimetil üre, ürenin oksijen atomunun kükürt atomu ile yer deitirmesiyle oluan üreye benzeyen organik bir bileiktir. Dimetil üre Su ve alkolde çözünür. Dimetil üre, organik sentezde kullanlan renksiz kristal toz formundadr. Dimetil üre, düük toksisite deerine sahiptir. Reaksiyon ürünü, süspansiyon içinde bir miktar sodyum klorür içeren bir Dimetil üre çözeltisinden oluuyordu. Dimetil üre, pirimidin türevlerinin sentezi için çok önemli bir balangç malzemesidir. Bu bulu, ürelerin hazrlanmasna ve daha özel olarak Dimetil üre nin hazrlanmasna ilikindir. Bu buluun amaçlar arasnda Dimetil üre hazrlamak için verimli yöntemlerin salanmas; kolayca gerçekletirilebilecek belirtilen türde yöntemlerin salanmas; nispeten pahal olmayan reaksiyon ortamn kullanan, atfta bulunulan tipte yöntemlerin salanmas; ve yüksek bir Dimetil üre verimi üreten belirtilen tipte yöntemlerin salanmas. Dier amaçlar ksmen görünür olacak ve ksmen aada belirtilecektir. Ortak Ad Dimetil üre
Tanm Dimetil üreteç, üre olarak bilinen organik bileikler snfna dahildir. Üreler, bir karbonil (C = O) fonksiyonel grubu ile birletirilmi iki amin grubu içeren bileiklerdir. Dimetil üre, oldukça zayf bazik (esasen nötr) bir bileiktir (pKa’sna göre). Dimetil üre (DMU) (IUPAC sistematik ad: Dimetil üre) bir üre türevidir ve organik sentezde bir ara ürün olarak kullanlr.
Tanm, üre olarak bilinen organik bileikler snfna aittir. Üreler, bir karbonil (C = O) fonksiyonel grubu ile birletirilmi iki amin grubu içeren bileiklerdir.
Dimetil üre (DMU) (IUPAC sistematik ad: 1,3-Dimetil üre) bir üre türevidir ve organik sentezde bir ara ürün olarak kullanlr. Az toksisiteye sahip renksiz kristal bir tozdur. 1,3-Dimetil üre kafein, teofilin, eczaclk kimyasallar, tekstil yardmclar, herbisitler ve dierlerinin sentezinde kullanlr. [2] Tekstil ileme endüstrisinde 1,3-Dimetil üre, tekstiller için formaldehit içermeyen bakm kolay apre maddelerinin üretiminde ara ürün olarak kullanlr. DMU’nun tahmini dünya üretiminin 25.000 tondan az olduu tahmin edilmektedir. Bir alkil üre türevi olan N, N′-Dimetil üre (1,3-Dimetil üre), [3] dorusal olmayan bir organik materyaldir. [4] ne eklinde kristaller oluturur. Etilasetat (solvent) ve heptan (çökeltici) kullanlarak buhar difüzyon teknii ile kristalize edilmitir. Dimetil üre kristalleri, her asimetrik birimde bir moleküle sahiptir. Kristaldeki moleküller, hidrojen balar ile balanr. Dimetil üre, kristallerinin polar yapsn aratrmak için kullanlan uygun reaktiftir. [1] Dowex-50W iyon deiim reçinesi ile tevik edilen N, N′-iki ikameli-4-aril-3,4-dihidropirimidinonlarn solventsiz sentezinde kullanlabilir. Scripps Center for Metabolomics tarafndan bamsz olarak oluturulan Tandem Kütle Spektrometresi verileri PDF olarak görüntülenebilir veya indirilebilir. 40410.pdf Test edilen metabolitler Scripps Center for Metabolomics METLIN Metabolite Database’de yer almaktadr. Daha fazla bilgi için, ziyaret edin. -Dimetil üre (1,3-Dimetil üre), bir alkil üre türevi, [3] dorusal olmayan bir organik materyaldir. [4] Dimetil üre, ine eklinde kristaller oluturur. Etilasetat (solvent) ve heptan (çökeltici) kullanlarak buhar difüzyon teknii ile kristalize edilmitir. Dimetil üre kristalleri her asimetrik birimde bir moleküle sahiptir. Kristaldeki moleküller, hidrojen balar ile balanr. Dimetil üre, kafein, teofilin, farmasötikler, tekstil yardmclar, herbisitler, vb. Sentezinde kullanlr. Dimetil üre ayrca metal iyon kompleksi, malzeme bilimi vb. Alanlarda da uygulama bulur. Dimetil üre, az toksisiteye sahip renksiz bir kristal tozdur. Dimetil üre, kafein sentezinde, Dimetil üre, teofilin sentezinde, Dimetil üre, eczaclkta kullanlan kimyasallarn sentezinde, Dimetil üre, herbisitlerin sentezinde kullanlr ve dierleri. Tekstil ileme endüstrisinde Dimetil üre, tekstiller için formaldehit içermeyen bakm kolay apre maddelerinin üretiminde ara ürün olarak kullanlr.Çok fazla olmayan kabarcklandrmay içeren Dimetil üre yapma yöntemi Fosgenin teorik orannn sulu bir metil amin çözeltisine oran ve ezamanl olarak bir kostik alkali ekleyerek reaksiyonla oluan asidi nötralize etme. Fosgen ve sulu bir metil amin çözeltisinin kartrlmasn içeren Dimetil üre yapma yöntemi, ad geçen fosgen, teorik orandan büyük ölçüde daha fazla deildir ve ad geçen kartrma, 500 ° C’nin çok üzerinde olmayan bir scaklkta, çalkalanarak gerçekletirilir. ve reaksiyon srasnda oluan asidi, reaksiyonun ilerlemesi srasnda hiçbir zaman önemli miktarda kostik mevcut olmayacak bir oranda bir kostik alkali ilave ederek reaksiyon karmna nötralize etmek. E zamanl olarak sulu bir ortama, gaz halindeki fosgen ve metil aminin eklenmesini içeren Dimetil üre yapma yöntemi; ad geçen fosgen, esas olarak 50 ° C’nin üzerinde olmayan bir scaklkta sulu ortam muhafaza ederek teorik orandan büyük ölçüde daha fazla sokulur. Dimetil üre bir üre türevidir ve organik sentezde bir ara ürün olarak kullanlr. Dimetil üre Az toksisiteye sahip renksiz kristal bir tozdur. Dimetil üre bir laboratuvar kimyasaldr. Dimetil üre Çeitli deneylerde kullanlmtr. Dimetil üre, ürenin oksijen atomunun kükürt atomu ile yer deitirmesiyle oluan üreye benzeyen organik bir bileiktir. Dimetil üre Su ve alkolde çözünür. Dimetil üre, organik sentezde kullanlan renksiz kristal toz formundadr. Dimetil üre Suda ve alkolde çözünür. Dimetil üre, organik sentezlerde kullanlan renksiz kristal toz formdadr. Dimetil üre düük toksite deerine sahiptir. Dimetil üre, düük toksisite deerine sahiptir. Reaksiyon ürünü, süspansiyon içinde bir miktar sodyum klorür içeren bir Dimetil üre çözeltisinden oluuyordu. Reaksiyon karm 155 pound arlndayd ve analiz, donma noktas 101 “C olan 24 pound Dimetil üre içerdiini gösterdi. Bu, balangç materyali olarak kullanlan metil amine göre teorik olarak% 90’lk bir verime karlk gelir. reaksiyon karmnn, uygun prosedürlerle geri kazanlabilen ve yeniden kullanlabilen yaklak% 10 reaksiyona girmemi metil amin içerdii. Geri kazanlan metil amin hesaba katldnda, Dimetil üre nin verimi pratikte teorikti. Dimetil üre nin geri kazanlmas için, çözelti konsantre edilebilir ve azaltlm basnç altnda stlarak sudan arndrlabilir. Kuru karm, Dimetil üre yi tuzdan ayrmak için kloroform, benzen veya susuz alkol gibi scak bir çözücü ile özümlenebilir.Dimetil üre , çözücü uçucu hale getirilerek veya uygun koullar altnda kristalletirilerek çözücüden geri kazanlabilir.Örnek 2 Malzemeler, reaksiyon scaklnn 30-35 ° C’de tutulmas ve% 5.5’e varan fazla miktarda fosgen kullanlmas dnda Örnek 1’de tarif edilenle ayn ekilde ve oranlarda birletirildi. Ürünün, teorik miktarda Dimetil üre ve% 14 reaksiyona girmemi metil amin içerdii analizle gösterilmitir. Dimetil üre , yan ürünlerle kirletildi, böylece ham materyal, 89.9 “C’lik bir donma noktasna sahipti. Dimetil üre , Örnek 1’de açkland gibi geri kazanlabilir, ancak bu koullar altnda elde edilen ham ürün, genellikle daha az saft. Dimetil üre hazrlama yöntemi, sulu bir ortamda teorik fosgen oranndan büyük ölçüde fazla olmayan ve metil aminin reaksiyona sokulmasn ve sulu çözeltiye bir kostik alkali ilave edilmesini içerir. ve sulu bir ortam içinde fosgenin teorik oranndan büyük ölçüde fazla deildir ve sulu çözeltiye bir kostik alkali ilave edilir. 2. Teorik oranda fazla olmayan gaz halindeki fosgen ve sulu bir metil amin çözeltisinin kartrlmasn ve sulu çözeltiye bir kostik alkali ilave edilmesini içeren Dimetil üre hazrlama yöntemi. Gaz halindeki fosgenin teorik oranndan büyük ölçüde fazla olmayan bir sulu metil amin çözeltisine kabarcklandrmay ve sulu çözeltiye bir kostik alkali ilave etmeyi içeren Dimetil üre yapma yöntemi. 4. Teorik olarak fazla olmayan gaz halindeki fosgenin sulu bir metil amin solüsyonu ile kartrlmasn ve reaksiyon karmna bir kostik alkali ekleyerek reaksiyonla oluan asidin nötrletirilmesini içeren Dimetil üre yapma yöntemi. 5. Fosgenin teorik oranndan büyük ölçüde fazla olmayan, sulu bir metil amin çözeltisi içine kabarcklandrmay ve ayn zamanda bir kostik alkali ilave ederek reaksiyonla oluan asidi nötrletirmeyi içeren Dimetil üre yapma yöntemi. Fosgen ve sulu bir metil amin çözeltisinin kartrlmasn içeren Dimetil üre yapma yöntemi; bahsedilen fosgen, esas olarak teorik orandan daha fazla deildir ve bahsedilen kartrma, 500 ° C’nin üzerinde olmayan bir scaklkta, çalkalanarak gerçekletirilir. tepkime srasnda oluan asidi tepkime karmna, tepkime srasnda hiçbir zaman önemli miktarda kostik bulunmayacak bir hzda bir kostik alkali ekleyerek nötralize etmek. Dimetil üre (DMU) (IUPAC sistematik ad: 1,3-Dimetil üre) bir üre türevidir ve organik sentezde bir ara madde olarak kullanlr.
Dimetil üre Az toksisiteye sahip renksiz bir kristal tozdur. Dimetil üre bir amiddir. Amidler / imidler, toksik gazlar oluturmak için azo ve diazo bileikleriyle reaksiyona girer. Organik amidlerin / imidlerin güçlü indirgeyici maddelerle reaksiyonu sonucu yanc gazlar oluur. Dimetil üre bir üre türevidir ve organik sentezde bir ara madde olarak kullanlr. Dimetil üre Az toksisiteye sahip renksiz bir kristal tozdur. Dimetil üre Laboratuvar kimyasaldr. Dimetil üre Çeitli deneylerde kullanlr. Dimetil üre alkil üre türevi, dorusal olmayan organik bir materyaldir. Dimetil üre, ine eklinde kristaller oluturur. Dimetil üre, buhar difüzyon teknii ile etilasetat (solvent) ve heptan (çökeltici) kullanlarak kristalize edilmitir. Dimetil üre kristalleri, her asimetrik birimde bir moleküle sahiptir. Kristaldeki moleküller, hidrojen balar ile balanr. Dimetil üre, kristallerinin polar yapsn aratrmak için kullanlan uygun reaktiftir. Dimetil üre, Dowex-50W iyon deiim reçinesi ile desteklenen, N, N′-iki ikameli-4-aril-3,4-dihidropirimidinonlarn çözücüsüz sentezinde kullanlabilir. Amidler çok zayf bazlardr (sudan daha zayf). midler henüz daha az baziktir ve aslnda tuz oluturmak için güçlü bazlarla reaksiyona girer. Dimetil üre, üre olarak bilinen organik bileikler snfna aittir. Üreaz, bir karbonil (C = O) fonksiyonel grubuyla birletirilen iki amin grubu içeren bileiklerdir. Dimetil üre son derece zayf bir bazik (esasen nötr) bir bileiktir (pKa’ya dayanarak). Dimetil üre (DMU) (IUPAC sistematik ad: Dimetil üre) bir üre türevidir ve organik sentezde bir ara madde olarak kullanlr.
Tanm, üre olarak bilinen organik bileikler snfna aittir. Üreaz, bir karbonil (C = O) fonksiyonel grubuyla birletirilen iki amin grubu içeren bileiklerdir.
Dimetil üreKaynama noktas: 269,1 °C
Dimetil üreMolar kütle: 88,108 g/mol
Dimetil üreYounluk: 1,14 g/cm³
Yani Dimetil üre asitler olarak reaksiyona girebilir. Amidlerin P2O5 veya SOCl2 gibi dehidrasyon ajanlar ile kartrlmas, ilgili nitrili üretir. Bu bileiklerin yanmas, kark nitrojen oksitleri (NOx) üretir. Dimetil üre (DMU) (1,3-Dimetil üre , metilkarbamid) renksiz bir katdr ve Dimetil üre, nitrojen içeren heterosiklik bileiklerin sentezi için uçucu olmayan, tam tersi ve güçlü bir reaktiftir. Dimetil üre, kafein, teofilin, farmasötikler, tekstil yardmclar, herbisitlerin sentezi için kullanlr. Dimetil üre ayrca metal iyon kompleksi, malzeme bilimi, vb. Alanlarda da uygulama bulur. 1954’te Blick ve Godt, önemli yap ta Dimetil üre urasili bir karmdan sentezledi.Ayn anda sulu bir ortama, gaz halindeki fosgen ve metil aminin de dahil edilmesini içeren Dimetil üre yapma yöntemi; ad geçen fosgen, sulu ortam büyük ölçüde 50 ° C’nin üzerinde olmayan bir scaklkta tutarak teorik orandan önemli ölçüde daha fazla deildir. Dimetil üre, az toksisiteye sahip renksiz bir kristal tozdur. Dimetil üre, kafein sentezinde, Dimetil üre, teofilin sentezinde, Dimetil üre, eczaclkta kullanlan kimyasallarn sentezinde, Dimetil üre, herbisitlerin sentezinde kullanlr ve dierleri. Tekstil ileme endüstrisinde Dimetil üre, tekstiller için formaldehit içermeyen bakm kolay apre maddelerinin üretiminde ara ürün olarak kullanlr. Dimetil üre, ürenin oksijen atomu yerine kükürt atomunun geçmesiyle olumu üreye benzeyen organik bileiktir. Dimetil üre Suda ve alkolde çözünür. Dimetil üre, organik sentezlerde kullanlan renksiz kristal toz formdadr. Dimetil üre düük toksite deerine sahiptir.
Diméthylurée
La diméthylurée ou 1,3-diméthylurée est un dérivé de l’urée qui est utilisé comme réactif en synthèse organique. C’est une poudre cristalline incolore, peu toxique.
Utilisation
La 1,3-diméthylurée est utilisée dans la synthèse de la caféine, de la théophylline, d’agents textile, de certains herbicides, etc. 5. Dans l’industrie textile, la diméthylurée est utilisée comme une intermédiaire pour la production d’agents anti-pli sans formaldéhyde.
La production mondiale de diméthylurée est estimée à moins de 25 000 tonnes par an.
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Diméthylurée
Image illustrative de l’article Diméthylurée
Identification de La diméthylurée
Nom UICPA 1,3-diméthylurée
No CAS 96-31-1
No ECHA 100.002.272
No CE 202-498-7
PubChem 7293
Apparence de La diméthylurée: solide cristallin incolore
Propriétés chimiques
Formule brute C3H8N2O [Isomères]
Masse molaire1 88,1084 ± 0,0037 g/mol
C 40,9 %, H 9,15 %, N 31,79 %, O 18,16 %,
Propriétés physiques
T° fusion 104,35 °C 2
T° ébullition 269,05 °C 2
Solubilité 765 g·l-1 (eau,21,5 °C) 3
Masse volumique 1,142 g·cm-3 (solide,20 °C) 3
T° d’auto-inflammation 400 °C 3
Point d’éclair 154 °C 3
Pression de vapeur saturante 6 mbar à 115 °C 3
La diméthylurée (DMU) (nom systématique de l’UICPA: 1,3-diméthylurée) est un dérivé de l’urée et utilisé comme intermédiaire dans la synthèse organique. C’est une poudre cristalline incolore avec peu de toxicité.
Les usages
La diméthylurée est utilisée pour la synthèse de la caféine, de la théophylline, des produits pharmaceutiques, des auxiliaires textiles, des herbicides et autres [2]. Dans l’industrie de transformation des textiles, la diméthylurée est utilisée comme intermédiaire pour la production d’agents de finition faciles à entretenir sans formaldéhyde pour les textiles. La production mondiale estimée de DMU est estimée à moins de 25 000 tonnes.
Procédure expérimentale de La diméthylurée: une cellule électrochimique avec du magnésium comme anode et du fil d’acier galvanisé comme cathode est ajoutée à un substrat (0,1 mmol, 1,0 éq.), 1,3-diméthylurée (0,3 mmol, 3,0 éq), oxyde de tripyrrolidinophosphine (1,0 mmol , 10 éq.), Et 1,5 mol / L de solution THF de LiBr (500 µL). Le mélange réactionnel est ajouté au THF (3 ml) et purgé à l’argon. L’électrolyse est initiée à un ampère cellulaire de 10 mA à température ambiante. Après consommation complète du substrat, la cellule est lavée avec de l’éther diéthylique et le solvant est éliminé sous vide. A la solution résiduelle, on ajoute de l’éther diéthylique et une solution de sel de Rochelle, puis on agite jusqu’à formation de deux couches claires. La couche organique est séparée et la couche aqueuse est extraite deux fois avec de l’éther diéthylique. Les couches organiques combinées sont séchées sur MgSO4 anhydre. Après élimination des matières organiques sous vide, le résidu est purifié par une courte colonne de silice (élution: acétate d’éthyle) pour donner le produit.
La description de La diméthylurée
Numéro de catalogue 803244
Synonymes 1,3-diméthylurée
Description N, N’-diméthylurée
Identification des métabolites
Nom commun diméthylurée
Description La diméthylurée appartient à la classe des composés organiques appelés urées. Les urées sont des composés contenant deux groupes amine joints par un groupe fonctionnel carbonyle (C = O). La diméthylurée est un composé basique (essentiellement neutre) extrêmement faible (basé sur son pKa). La diméthylurée (DMU) (nom systématique de l’UICPA: diméthylurée) est un dérivé de l’urée et utilisé comme intermédiaire dans la synthèse organique.
La description appartient à la classe des composés organiques appelés urées. Les urées sont des composés contenant deux groupes amine joints par un groupe fonctionnel carbonyle (C = O).