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. 29, 1997
Filed:
Jun. 02, 1995
Applicant:
Inventors:
David R Andrews, Maplewood, NJ (US);
Dinesh Gala, East Brunswick, NJ (US);
Jacques Gosteli, Basel, CH;
Frank Guenter, Langnau, CH;
William Leong, Westfield, NJ (US);
Ingrid Mergelsberg, Dagmersellen, CH;
Anantha Sudhakar, East Brunswick, NJ (US);
Assignee:
Schering Corporation, Kenilworth, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544366 ; 5482646 ; 5482632 ;
Abstract
Described is a process for preparing triazolone compounds of the formula ##STR1## comprising heating a mixture of a compound of the formula ##STR2## and a hydrazine derivative of the formula R.sup.5 --NH--NH--CHO, R.sup.5 --NH--NH--C(O)OC(CH.sub.3).sub.3 or R.sup.5 --NH--NH--C(O)OCH.sub.2 C.sub.6 H.sub.5, optionally in the presence of an added base.