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. 11, 2008
Filed:
Mar. 25, 2003
Yasuhiro Shiomi, Osaka, JP;
Osamu Uno, Osaka, JP;
Akio Ohta, Osaka, JP;
Takeshi Sunakami, Tokyo, JP;
Yasuhiro Shiomi, Osaka, JP;
Osamu Uno, Osaka, JP;
Akio Ohta, Osaka, JP;
Takeshi Sunakami, Tokyo, JP;
Koei Chemical Co., Ltd., Osaka-Shi, JP;
Abstract
A process is disclosed for preparing a heterocyclic aldehyde by oxidizing a heterocyclic alcohol with high selectivity and high yield. Specifically, the heterocyclic aldehyde is prepared by reacting a heterocyclic compound having at least one hydroxymethyl group bonded to a carbon atom of a heterocyclic ring with a hypohalogenous acid salt in the presence of a base to oxidize the hydroxymethyl group, wherein reaction is conducted in the co-presence of a 2,2,6,6-tetramethylpiperidine-1-oxyl derivative having at least two 2,2,6,6-tetramethylpiperidine-1-oxyl-4-yl groups.