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:
Sep. 10, 1985
Filed:
Aug. 22, 1983
Applicant:
Inventor:
Terry L Wright, Clayton, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546162 ; 546114 ; 2604 / ; 2604 / ;
Abstract
A process is described for introducing nitrile groups to compounds susceptible to Vilsmeier formylation via two sequential reactions in a single reaction medium. In the first reaction, the susceptible compound is reacted with a Vilsmeier reagent in the presence of phosphorus oxychloride. In the second reaction, a hydroxylamine salt is introduced to the medium in the presence of at least an equivalent amount of phosphorus oxychloride.