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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.:

US 5625064 B1

PDFFull Text
Date of Patent:
Apr. 29, 1997

Filed:

Jun. 02, 1995

Process for the preparation of triazolones

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:

Blasdale; John

Primary Examiner:

John M Ford

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.

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Andrews, David. (1997). Process for the preparation of triazolones (U.S. Patent No. 5625064). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5625064

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