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    • 2. 发明专利
    • METHOD FOR PRODUCING β-MERCAPTOCARBOXYLIC ACID
    • 生产β-巯基羧酸的方法
    • JP2009091356A
    • 2009-04-30
    • JP2008240660
    • 2008-09-19
    • Showa Denko Kk昭和電工株式会社
    • AOKI HIDEMASASHIBUYA AKIRA
    • C07C319/04C07B61/00C07C323/22C07C323/52C07C323/56C07C323/60
    • C07C319/04C07B45/06C07C2601/10C07C2601/16C07C323/52C07C323/56
    • PROBLEM TO BE SOLVED: To provide β-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 available α,β-unsaturated carboxylic acid (such as crotonic acid) in a high yield.
      SOLUTION: The invention relates to a method for efficiently producing β-mercaptocarboxylic acids using a solid acid catalyst such as zeolite, which product corresponds to respective starting raw materials of α,β-unsaturated carboxylic acids (an α,β-unsaturated carboxylic acid, an α,β-unsaturated carboxylic acid ester, an α,β-unsaturated amide, an α,β-unsaturated aldehyde and an α,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
    • 要解决的问题:提供可用作药物或农药的合成原料和聚合物化合物中的添加剂的β-巯基羧酸,并且可以通过以易于获得的α,β作为原料有效地工业生产 - 不饱和羧酸(如巴豆酸)。 解决方案:本发明涉及使用沸石等固体酸催化剂高效生产β-巯基羧酸的方法,该产物对应于α,β-不饱和羧酸(α,β-不饱和羧酸)的各自起始原料 羧酸,α,β-不饱和羧酸酯,α,β-不饱和酰胺,α,β-不饱和醛和α,β-不饱和酮)和硫化氢等(硫化氢,硫化物盐和氢硫化物 盐),其中使用与水相容的溶剂作为反应溶剂。 版权所有(C)2009,JPO&INPIT