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:
Aug. 09, 1994
Filed:
Sep. 23, 1993
Applicant:
Inventors:
Toshio Yamamoto, Ogaki, JP;
Kazumasa Hirata, Osaka, JP;
Shigenori Wakabayashi, Osaka, JP;
Akio Katsuura, Osaka, JP;
Assignee:
Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
5483335 ; 568431 ; 568471 ;
Abstract
In producing formylimidazoles by catalytically oxidizing the corresponding 4- or 5-hydroxymethylimidazoles, the catalytic oxidation is carried out in the presence of a noble metal catalyst while oxygen or air is blown into the reaction system. In this case, it is particularly desirable that the catalytic oxidation in the presence of a noble metal catalyst be carried out in a solvent comprising an aqueous alkali or in a mixed solvent composed of an aqueous alkali and an organic solvent immiscible with water.