申请人:Showa Denko K.K.
公开号:US07902383B2
公开(公告)日:2011-03-08
A method of the invention industrially produces heterocyclic mercapto compounds useful as raw materials or intermediates in the synthesis of medicaments or pesticides, or as permanent wave agent, with a high yield and high productivity using easily available starting materials. A heterocyclic mercapto compound represented by Formula (1) (wherein X represents any structure of —O—, —S—, —NH—, and —NR1—; R1 represents any of an alkyl group, alkoxy group and alkoxyalkyl group each having 1 to 6 carbon atoms; Y represents an oxygen atom, a sulfur atom or —NR2—; R2 represents a hydrogen atom or alkyl group having 1 to 6 carbon atoms; and Z1 represents a divalent organic residue having at least one mercapto group) is produced by reacting a metal sulfide or a metal hydrosulfide with a compound represented by Formula (2) (wherein X and Y are as defined in Formula (1); and Z2 represents a divalent organic residue having at least one halogen group) in the presence of a solvent at a pH of 7.0 to 11.0.
本发明提供了一种工业生产杂环巯基化合物的方法,该化合物可用作制药或农药的原料或中间体,或作为永久波浪剂,使用易得的起始材料,高产率和高生产率。通过在溶剂存在下,在pH值为7.0至11.0的条件下,将金属硫化物或金属氢硫化物与式(2)所表示的化合物(其中X和Y如式(1)中定义;Z2表示具有至少一个卤素基团的二价有机残基)反应,从而制备出式(1)所表示的杂环巯基化合物(其中X表示-O-,-S-,-NH-和-NR1-的任何结构;R1表示具有1至6个碳原子的烷基,烷氧基和烷氧基烷基之一;Y表示氧原子,硫原子或-NR2-;R2表示氢原子或具有1至6个碳原子的烷基;Z1表示具有至少一个巯基的二价有机残基)。