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. 02, 2002
Filed:
Jun. 22, 2000
Applicant:
Inventors:
Assignee:
Daiso Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
C07D / ; C07C / ; C07C / ; C07C / ;
Abstract
The present invention relates to a process for reacting &agr;-aminoaldehyde derivatives having a sterically bulky amino group which are commercially available with a metal cyanide in the presence of an acid chloride, an acid anhydride or the like to synthesize 3-amino-2-hydroxybutyronitrile derivatives in high yields and high erythro selectivity. When optically active &agr;-aminoaldehyde derivatives are used, racemization hardly occurs during the reaction, and the desired products are obtained in high optical purity.