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:
Nov. 04, 1997
Filed:
Oct. 31, 1996
Applicant:
Inventors:
Masahiro Imoto, Nishinomiya, JP;
Akira Mizuno, Kyoto, JP;
Makoto Shibata, Ashikaga, JP;
Tomoe Iwamori, Ibaraki, JP;
Assignee:
Suntory Limited, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548531 ;
Abstract
A simple and industrially viable process for preparing a 1-substituted pyrrole-3-carboxylic acid derivative of formula (I) is provided. The process comprises reacting a compound of formula (II), a compound of formula (III), and an acid anhydride according to the following reaction, ##STR1## wherein R.sub.1 and R.sub.2 individually represent an alkyl, aralkyl, or aryl group.