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:
Dec. 24, 2013
Filed:
Mar. 24, 2006
Applicants:
Keiji Maruoka, Kyoto, JP;
Yukifumi Nishimoto, Kobe, JP;
Kenichiro Yamamoto, Kobe, JP;
Inventors:
Assignee:
Nagase & Co., Ltd., Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D 223/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a chiral phase-transfer catalyst of the following formula (I): The compound (I) can be produced by reacting a 2,2'-dimethylene bromide-1,1′-biphenyl derivative, which can be produced through comparatively small number of steps, with an easily available secondary amine.
Maruoka, Keiji. (2013). Optically active quaternary ammonium salt having axial asymmetry and process for producing α-amino acid and derivative thereof with the same (U.S. Patent No. 8614316). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8614316
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile