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ChemicalBook CAS DataBase List Methyl thioglycolate
2365-48-2

Methyl thioglycolate synthesis

4synthesis methods
Adding thioglycollic acid with purity of between 70.0 and 96.0 percent and methanol with purity of between 95.0 and 99.9 percent into a reaction device according to the molar ratio of 1:1.3-4.0; subsequently, adding an activating agent into the reaction device, stirring and heating for reaction; and after the reaction is finished, carrying out separatory distillation on reaction products to obtain the methyl thioglycolate. The activating agent is a p-toluenesulfonic acid methanol solution with a mass concentration of between 20 and 30 percent, and the use amount is 0.5 to 1.0 percent of the total mass of relative input materials.
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Yield:2365-48-2 94%

Reaction Conditions:

with sulfuric acid for 4 h;Reflux;

Steps:

Synthesis of Methyl Thioglycolate (I)

A mixture of methanol (0.4mol) and mercapto acetic acid(1 mol) was refluxed while stirred and concentrated H2SO4 (0.8 g) was added to the solution. Then the mixture was refluxed for 4h. After, the mixture was extracted three times with Cyclohexane (80 mL) and toluene (40 mL), then the extractive solution was dried using CaCl2, the solvent was evaporated in a vacuum to yield the colorless liquid (34g, 94%).

References:

Tan, Chunbin;Liu, Xiaoling;Du, Hongfei [Revue Roumaine de Chimie,2019,vol. 64,# 3,p. 271 - 276]

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