Methyl benzene glycolate Methyl Benzilate
Structural formula
| Business number | 01LJ |
|---|---|
| Molecular formula | C15H14O3 |
| Molecular weight | 242.27 |
| label |
Methyl diphenylhydroxyacetate, Methyl diphenylglycolate, diphenyl methyl ester, ethyl 2-hydroxy-2,2-diphenylacetate, ethyl a-hydroxydiphenylacetate, Methyl-2-hydroxy-2,2-diphenyl-acetat |
Numbering system
CAS number:76-89-1
MDL number:MFCD00004446
EINECS number:200-991-1
RTECS number:None
BRN number:2121492
PubChem ID:None
Physical property data
1. Characteristics: white crystal
2. Density (g/mL,25/4℃): Unsure
3. Relative vapor density (g/mL,AIR=1): Unsure
4. Melting point (ºC):74 -75℃
5. Boiling point (ºC,Normal pressure):187℃（ 1.7kPa)
6. Boiling point (ºC,5.2kPa): Unsure
7. Refractive index: Uncertain
8. Flash Point (ºC): Unsure
9. Specific optical rotation (º): Unsure
10. Autoignition point or ignition temperature (ºC): Unsure
11. Vapor pressure (kPa,25ºC): Unsure
Storage method
Shady Keep sealed.
Synthesis method
By It is produced by reacting benzaldehyde with sodium cyanide to form benzoin, which is then reacted with potassium bromate to form benzoic acid, which is finally esterified with methanol. 1.Benzoin4LBenzaldehyde and6LMix ethanol and add60gSodium cyanide solution in500mlWater solution, heated to reflux2h, cooling, filtering, washing with water, and drying to obtain the product4.5kg. 2.The preparation of diphenylglycolic acid will 8kgBenzoin wet product, 15LWater,58kg16%sodium hydroxide solution and2kgMix potassium bromate, heat and stir for reaction4h. Divide the reaction mixture into 2 Dilute with water and cool Then acidify with dilute sulfuric acid to controlpHValue for7-8, filter. The filtrate is then acidified topH Value is1-2, filter and get crude products8kg. 3.Methyl diphenylglycolate Preparation will4kgDiphenylhydroxy acid and5LMix methanol and add150mlSulfuric acid, heated to reflux2h. Pour containing300gSodium carbonate30LWater, stir, filter, get3kgCrude. Recrystallize with methanol, add activated carbon to decolorize, and then re-crystallize in 60℃The finished product can be obtained by drying2.8 kgleft and right.
Purpose
Use in organic synthesis.
-FAMILY: 宋体; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman'”>, filter. The filtrate is then acidified topHValue is1-2, filter to get crude product about8kg.3.Preparation of methyl diphenylglycolate4kgDiphenylhydroxy acid and5LMethanol mix, add150mlSulfuric acid, heated to reflux2h. Pour containing300gSodium carbonate30LWater, stir, filter, get3kgCrude. Recrystallize with methanol, add activated carbon to decolorize, and then re-crystallize in 60℃The finished product can be obtained by drying2.8 kgleft and right.
Purpose
Use in organic synthesis.
