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. 24, 1982
Filed:
Jul. 21, 1981
Applicant:
Inventors:
Michel Delmas, Entraygues, FR;
Antoine Gaset, Toulouse, FR;
Yves Le Bigot, Saint Martin de Londres, FR;
Assignee:
Agrifurane S.A., Bon Encontre, FR;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549505 ; 568652 ; 568658 ; 568939 ; 585535 ; 585638 ; 549506 ;
Abstract
The invention relates to a process for converting an aldehyde into a corresponding alkene and of the type wherein the aldehyde is placed in the presence of a phosphoric reagent and a base in solution in an organic aprotic solvent; the process comprising using a mineral base evincing in an aqueous medium a basic force less than or equal to that of the hydroxide ion or a strongly basic organic base of the nitrogen compounds family and adjusting the hydration rate of the reaction medium in such a manner that there are about 0.5 to 5 moles of water per mole of aldehyde.