| 摘要 |
PROBLEM TO BE SOLVED: To provideβ-mercaptocarboxylic acids which are useful as additives in synthetic raw materials for pharmaceutical or agricultural agents and in polymer compounds and can be industrially produced efficiently by using as a raw material an easily availableα,β-unsaturated carboxylic acid (such as crotonic acid) in a high yield. SOLUTION: The invention relates to a method for efficiently producingβ-mercaptocarboxylic acids using a solid acid catalyst such as zeolite, which product corresponds to respective starting raw materials ofα,β-unsaturated carboxylic acids (anα,β-unsaturated carboxylic acid, anα,β-unsaturated carboxylic acid ester, anα,β-unsaturated amide, anα,β-unsaturated aldehyde and anα,β-unsaturated ketone) and hydrogen sulfide etc. (hydrogen sulfide, sulfide salt and hydrosulfide salt), wherein a solvent compatible with water is used as the reaction solvent. COPYRIGHT: (C)2009,JPO&INPIT
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