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:
May. 18, 1993
Filed:
May. 08, 1992
Applicant:
Inventors:
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
540450 ; 540473 ; 540545 ; 540552 ; 540567 ; 540568 ; 540576 ; 540593 ; 544-2 ; 544-3 ; 544-5 ; 544 48 ; 544 47 ; 544 65 ; 544 63 ; 544 66 ; 546112 ; 546114 ; 546115 ; 546122 ; 548122 ; 548123 ; 548124 ; 548126 ; 548950 ; 548951 ; 558 62 ; 558303 ; 560-8 ; 562125 ; 562126 ; 562405 ; 562840 ; 568808 ; 568812 ; 568929 ; 568936 ; 570141 ; 570143 ; 570144 ; 570147 ;
Abstract
Introduction of a fluoro substituent into an aromatic ring adjacent an electron donating group is difficult producing mixed isomers and low yields of desired products. A process for the introduction of a fluoro substituent into a substantially adjacent position to an electron-donating group into an aromatic compound in high yield is disclosed. The fluoroaromatic compounds are useful as synthetic intermediates for example in the manufacture of agrochemicals, pharmaceuticals and dyestuffs.