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:
Apr. 24, 2012
Filed:
Dec. 27, 2005
Tsutomu Katsuki, Fukuoka, JP;
Kazuhiro Matsumoto, Fukuoka, JP;
Yuji Sawada, Fukuoka, JP;
Japan Science and Technology Agency, Saitama, JP;
Abstract
There is provided a method for industrially producing optically active epoxy compounds by asymmetrically epoxidizing prochiral unsaturated compounds with an oxidant using as a catalyst a single substance or a di-μ-oxo dimer derived therefrom represented by any of the following formulae (I), (I'), (II), (II′), (III), (III′), (IV), and (IV′): [wherein Rs are independently an alkyl group or an aryl group; Rs are independently an alkyl group or an aryl group; Rs are independently an alkyl group or an aryl group, provided that two Rs may be bonded with each other to form a ring; Rs are independently a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a nitro group, or a cyano group; M is TiY(Y is Cl, alkoxide, or a μ-oxo ligand)].