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:
Jan. 06, 1976
Filed:
Jul. 02, 1974
Applicant:
Inventor:
Rainer Philippson, Bergkamen, DT;
Assignee:
Schering Aktiengesellschaft, Berlin & Bergkamen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2602 / ; 2603972 ; 26023957 ;
Abstract
Steroids containing both an isolated and an .alpha.,.beta.-unsaturated keto group are selectively reacted with dimethyl sulfonium methylide in a non-reactive polar solvent and in the presence of an alkali tertiary alcoholate to produce .alpha.,.beta.-unsaturated keto steroids containing the group ##EQU1##