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. 12, 1996
Filed:
Jul. 07, 1994
Applicant:
Inventors:
Masahiko Mizuno, Ibaraki, JP;
Isao Kurimoto, Oita, JP;
Norihiko Hirata, Suita, JP;
Toshiya Takahashi, Ibaraki, JP;
Masayoshi Minai, Moriyama, JP;
Takahiro Yamamoto, Oita, JP;
Tadashi Mizuno, Ibaraki, JP;
Yasunobu Miyamoto, Takatsuki, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
5483037 ;
Abstract
A process for producing a thiophene derivative represented by a general formula (2) involves catalytically reducing a compound represnted by the general formula (1) with hydrogen in a solvent mixture of at least one of alcohol and water in the presence of a palladium catalyst soluble in organic solvents. A thiophene derivative is useful in preparing biotin (Vitamin H).