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. 29, 1988
Filed:
Aug. 25, 1987
Applicant:
Inventors:
Wilfried Buschken, Haltern, DE;
Klaus Rindtorff, Recklinghausen, DE;
Assignee:
Huls Aktiengesellschaft, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558335 ; 558341 ;
Abstract
A process for the production of the bicyclic compound 4,4,8,8,10-pentamethyl-10-cyano-bicyclo[4.4.0]-dec-1,6-en-2-one which comprises the steps of (a) reacting a ketone fraction comprising ##STR1## or mixtures thereof, (b) by adding HCN to the ketone fraction the presence of a base, at a temperature of 50.degree.-200.degree. C. to obtain an addition product comprising the bicyclic compound, and