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. 13, 1979
Filed:
May. 08, 1978
Applicant:
Inventors:
Thomas H Fisher, Midland, MI (US);
William Dowd, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260599 ; 2606 / ; 562459 ; 562577 ; 2606 / ; 260602 ;
Abstract
A process for preparing an allylic or an aromatic aldehyde, such as acrolein or benzaldehyde, the process comprising contacting in a basic, liquid, biphasic mixture and at reactive conditions an allylic halide or a halomethylated aromatic, such as allyl or benzyl chloride, with a divalent chromate ion, is improved by contacting the allylic halide or halomethylated aromatic with the divalent chromate ion in the presence of a catalytic amount of a quaternary ammonium and/or phosphonium salt, such as tetra-n-butylammonium chloride. The improved process is faster, cleaner and more complete than the process of the prior art.