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. 30, 1993
Filed:
Oct. 16, 1990
Applicant:
Inventors:
Assignee:
Sanofi, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549468 ; 549467 ;
Abstract
The invention relates to a process for the preparation of 3-benzoyl benzofuran derivatives of general formula: ##STR1## wherein a benzofuran derivative of general formula: ##STR2## is reacted in situ in the presence of aluminium chloride successively with phosgene or oxalyl chloride, and then with a phenolic derivative of general formula: ##STR3## to produce a complex which is hydrolysed to form the desired compound of 3-benzoyl benzofuran.