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:
Aug. 10, 1982
Filed:
Oct. 08, 1980
Applicant:
Inventors:
Marc Julia, Paris, FR;
Lucien Saussine, Paris, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568 28 ;
Abstract
The present invention relates to a process for the preparation of unsaturated sulphones. It relates to a process in which unsaturated sulphones are prepared by sulphonation of the corresponding diene compound in the presence of a palladium catalyst, the sulphonating agent being a sulphinic acid or a sulphinate in the presence of an acid. The sulphones obtained are synthesis intermediates, particularly in the preparation of vitamins A and E.