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:
Oct. 12, 2010
Filed:
Nov. 08, 2007
Shoichi Kondo, Funabashi, JP;
Kazuhiro Matsumoto, Fukuoka, JP;
Yuji Sawada, Fukuoka, JP;
Tsutomu Katsuki, Fukuoka, JP;
Shoichi Kondo, Funabashi, JP;
Kazuhiro Matsumoto, Fukuoka, JP;
Yuji Sawada, Fukuoka, JP;
Tsutomu Katsuki, Fukuoka, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
[Problem] To provide a production method of optically active epoxy compound, and a complex used for the production method and a production method of the complex. [Means for solving the problem] The skeleton that is necessary for expressing a high catalyst activity of optically active titanium salan complex of formulae (1) and (1') and the substituent that is useful therefor and the position of the substituent are identified, and it is found that optically active epoxy compounds can be produced with a high enantioselectivity and a high chemical yield compared with a case where the prior optically active titanium salan complex is used. The production method comprises subjecting a prochiral compound (formula (4), (5) or (6)) having carbon-carbon double bond in the molecule to asymmetric epoxidation to produce an optically active epoxy compound (formula (7), (8) or (9)). The present invention relates also to a complex used for the production method and a production method of the complex.