PROCESS FOR PREPARATION OF ALPHA-, ALPHA-, ALPHA-, TRIFLUOROANISOLES

摘要

Trifluoroanisoles of the formula IMAGE where m is 1 or 2 and n is 0 to 3, are prepared by reacting hydrogen fluoride with trichloroanisoles of the formula IMAGE in the vapor phase, in the presence of a fluorinated alumina catalyst wherein X is halogen other than fluorine; R is aryl, preferably 1 to 14 carbon atoms, halogen substituted aryl, halogen, alkyl of 1 to 6 carbon atoms, or alkoxy of 1 to 6 carbon atoms; m is 1 or 2; n is 0 to 3; w is 0 to 2; p is 1 to 3; q is 0 to 2; w+p+q is 3; w' is 1 to 3 and is greater than w; p' is 0 to 2 and is less than p; q' is 0 to 2 and is equal to q; and w'+p'+q' is 3.