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. 28, 1981
Filed:
Feb. 21, 1979
Applicant:
Inventors:
Takashi Kamiya, Suita, JP;
Masashi Hashimoto, Takarazuka, JP;
Osamu Nakaguti, Toyonaka, JP;
Teruo Oku, Osaka, JP;
Yoshiharu Nakai, Otsu, JP;
Hidekazu Takeno, Nara, JP;
Assignee:
Fujisawa Pharmaceutical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; A67K / ;
U.S. Cl.
CPC ...
2602 / ; 544193 ; 544215 ; 549 59 ; 2602454 ; 424244 ;
Abstract
A process for preparing an azetidinone of the formula: ##STR1## which comprises reacting a C-unsubstituted methyleneamine of the formula: ##STR2## with R.sup.2 --CH.sub.2 COOH, its acid halide or anhydride, in the presence of boron trihalide and an organic base, wherein R.sup.1 is an organic residue bearing a carboxy group or its derivative and R.sup.2 is azido, substituted amino, halogen, acyloxy, alkoxy, aryloxy or aralkoxy.