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:
Feb. 12, 1985
Filed:
Mar. 14, 1983
Applicant:
Inventors:
Sudarshan K Malhotra, Walnut Creek, CA (US);
Jon A Orvik, Danville, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546346 ; 546345 ;
Abstract
2(6)-(Trichloromethyl)pyridines are reduced to the corresponding 2(6)-(dichloromethyl)pyridines by treatment with a strong base and an anionic reductant derived from a reductant source material selected from the group consisting of chloroform, dimethylsulfoxide, dimethylsulfone, and a ketone having a base-abstractable hydrogen, said treatment taking place in the presence of a polar, non-hydroxylic solvent and/or a phase transfer catalyst.