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:
Jun. 04, 1985
Filed:
Mar. 14, 1983
Applicant:
Inventors:
Robert Southgate, Warnham, GB;
Pamela Brown, Guildford, GB;
Assignee:
Beecham Group p.l.c., , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
534560 ; 2041 / ; 2041 / ; 544 71 ; 544 90 ;
Abstract
A process for the preparation of a compound of the formulae (Ia) and/or (Ib): ##STR1## wherein R.sup.1 and R.sup.2 are independently substituted or unsubstituted hydrocarbon groups or are joined together so as to form a carbocyclic or heterocyclic ring, and R.sup.3 is a substituted or unsubstituted hydrocarbon group; which process comprises the ring-closing cyclization of a compound of the formula (II): ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined in relation to formulae (Ia) and (Ib).
Southgate, Robert. (1985). Chemical process (U.S. Patent No. 4521337). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4521337
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile