The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2011
Filed:
May. 28, 2007
Shinichi Yorozuya, Kawasaki, JP;
Hidemasa Aoki, Kawasaki, JP;
Shinichi Yorozuya, Kawasaki, JP;
Hidemasa Aoki, Kawasaki, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
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 —NR—; Rrepresents 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 —NR—; Rrepresents a hydrogen atom or alkyl group having 1 to 6 carbon atoms; and Zrepresents 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 Zrepresents 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.