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:
Apr. 27, 1976
Filed:
Dec. 23, 1974
Applicant:
Inventor:
Pius Anton Wehrli, North Caldwell, NJ (US);
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2604 / ; 2605 / ; 260594 ; 260598 ; 260599 ; 2606 / ; 260602 ;
Abstract
.gamma., .delta.-Unsaturated carbonyl compounds are prepared by reacting a tertiary allyl alcohol with an acetal or ketal of an aliphatic aldehyde or ketone in the presence of an acid catalyst system consisting of a strong acid and a weak acid.