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. 01, 1983
Filed:
Apr. 30, 1982
Applicant:
Inventors:
Goetz E Hardtmann, Morristown, NJ (US);
Oljan Repic, Hopatcong, NJ (US);
Susi Vogt, Chatham, NJ (US);
Assignee:
Sandoz, Inc., E. Hanover, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ;
Abstract
Conversion of 3-acyloxy-benzodiazepin-2-ones into corresponding 3-hydroxy benzodiazepin-2-ones is carried out efficiently with potassium hydroxide or potassium alkoxide as catalyst in lower alkanol solvent at a pH of 11-11.5. The final products, which include temazepam, are useful as sleep inducers.