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:
May. 10, 1977
Filed:
Apr. 22, 1976
Applicant:
Inventors:
Martin Doyle, Macclesfield, EN;
Stephen Collyer Smith, Macclesfield, EN;
Assignee:
Imperial Chemical Industries Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602 / ;
Abstract
Manufacture of 1-(quinazolin-4-yl)indol-3-ylacetic acids and salts thereof by reacting a phenylhydrazone derivative with a quinazoline derivative, for example a halogenoquinazoline, and then ring-closing the resulting intermediate product. An illustrative product of the process of the invention is 1-(7-chloroquinazolin-4-yl)-5-methoxy-2-methylindol-3-ylacetic acid.