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:
May. 03, 2005
Filed:
Dec. 18, 2001
Takayoshi Torii, Kanagawa, JP;
Takayuki Hamada, Kanagawa, JP;
Tomoyuki Onishi, Kanagawa, JP;
Kunisuke Izawa, Kanagawa, JP;
Takao Ikariya, Tokyo, JP;
Ryoji Noyori, Aichi, JP;
Takayoshi Torii, Kanagawa, JP;
Takayuki Hamada, Kanagawa, JP;
Tomoyuki Onishi, Kanagawa, JP;
Kunisuke Izawa, Kanagawa, JP;
Takao Ikariya, Tokyo, JP;
Ryoji Noyori, Aichi, JP;
Ajinomoto Co., Inc., Tokyo, JP;
Abstract
A process of preparing an optically active halohydrin compound characterized by comprising asymmetric hydrogen transfer reduction of an α-haloketone compound in the presence of a group 9 transition metal compound having a substituted or unsubstituted cyclopentadienyl group and an optically active diamine compound. The asymmetric hydrogen transfer reduction is preferably conducted in the presence of a base.