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:
Jul. 01, 2008
Filed:
May. 20, 2004
Makoto Saito, Kawasaki, JP;
Takashi Ueda, Kawasaki, JP;
Takashi Tani, Kawasaki, JP;
Keiichi Nakamura, Kawasaki, JP;
Makoto Saito, Kawasaki, JP;
Takashi Ueda, Kawasaki, JP;
Takashi Tani, Kawasaki, JP;
Keiichi Nakamura, Kawasaki, JP;
Show A Denko K.K., Tokyo, JP;
Abstract
Disclosed is a process for preparing a β-diketone compound such as 2,6-dimethyl-3,5-heptanedione, which comprises reacting an ester compound such as an alkyl isobutyrate with a ketone compound such as 3-methylbutanone in the presence of an alkali metal alkoxide as a catalyst. The process comprises a step 1 in which an ester compound CRRRCOOQ is reacted with a ketone compound CRRRCOCHRusing an alkali metal alkoxide catalyst to give a β-diketone compound CRRRRCOCHRRR. (In the formulae, Ris hydrogen or an alkyl group of 1 to 4 carbon atoms while others are each independently hydrogen or an alkyl group of 1 to 3 carbon atoms, and at least one of Rto Ris hydrogen.)