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. 07, 2000
Filed:
Sep. 03, 1999
Applicant:
Inventors:
Alexander Pai-Yung Fung, Martinez, CA (US);
David Dale Friese, Orinda, CA (US);
Erwin Michael Seidel, Clayton, CA (US);
Alan John Whitton, Falkirk, GB;
Alastair lain Stewart, Grangemouth, GB;
Jennifer Ann White, Grangemouth, GB;
Raymond Vincent Jones, Grangemouth, GB;
John Desmond Hunt, Haslemere, GB;
Assignee:
Zeneca Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546303 ;
Abstract
A process for the preparation of 2-hydroxy-6-trifluoromethylpyridine which comprises reacting 2-fluoro-6-trifluomethylpyridine or a mixture of 2-fluoro-6-trifluoromethylpyridine and 2-chloro-6-trifluoromethylpyridine with an alkali metal hydroxide at a temperature of from 50.degree. C. to 160.degree. C. and acidifying the product so formed.