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:
Oct. 02, 1990
Filed:
Oct. 27, 1988
Applicant:
Inventors:
Axel Woschina, Poing, DE;
Helmut Grill, Vaterstetten, DE;
Assignee:
Klinge Pharma GmbH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564324 ;
Abstract
The invention concerns the direct preparation of trans-1,1,2-triphenyl-but-1-ene derivatives having the general formula 1 by dehydration of carbinols having the general formula 2 by heating in a strongly hydrochloric or sulphuric acid medium with the exclusion of organic solvents. ##STR1##