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:
Oct. 24, 1989
Filed:
Jan. 13, 1988
Applicant:
Inventors:
Yasunobu Nishimura, Kamifukuoka, JP;
Toshikazu Kawai, Kawagoe, JP;
Assignee:
Central Glass Company, Limited, Ube, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560109 ; 568332 ;
Abstract
Two kinds of novel fluorobenzophenones represented by the general formula (A), wherein X is F or Cl, are synthesized from 1,2-difluorobenzene and 4,4'-difluorobenzophenone, respectively. Novel fluorophenyl fluorobenzoates represented by the general formula (B), wherein X is F or Cl, are obtained by oxidizing the fluorobenzophenones (A), respectively, in an organic solvent by using trifluoroacetic acid and aqueous solution of hydrogen peroxide. By hydrolysis of each of the fluorobenzoates (B), 3,4-difluorophenol or 3-chloro-4-fluorophenol can easily be obtained. ##STR1##