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:
May. 11, 1993
Filed:
Nov. 20, 1991
Michio Suzuki, Hyogo, JP;
Hiroyuki Hata, Hyogo, JP;
Masato Yoshikawa, Hyogo, JP;
Toshiyuki Ohe, Hyogo, JP;
Hirokazu Kagano, Hyogo, JP;
Hiroshi Goda, Hyogo, JP;
Masahito Nakano, Hyogo, JP;
Masaki Teramoto, Hyogo, JP;
Sumitomo Seika Chemicals Co., Ltd., Hyogo, JP;
Abstract
The present invention is directed to a method for producing dichlorophenylthioglycolic acid which comprises reacting monobromodichlorobenzene or trichlorobenzene with a thioglycolate in a ratio of 0.5 to 2.5 mols of the latter to 1 mol of the former in a polar solvent, and to a method for producing dichlorophenylthioglycolic acid comprising further reacting the reaction mixture obtained as above with a monohalogenoacetate. The method of the present invention is very useful industrially, advantageously producing dichlorophenylthioglycolic acid in high yield.