PROCEDURE FOR OBTAINING CHLORIDES OF 3,5-BIS- (TRIFLUORMETIL) -BENZOIL AND NEW HALOGENUROS OF 3,5-BIS- (TRIHALOGENOMETIL) - AND (3,5) -DIMETILBENZOIL.

摘要

Procedure for obtaining 3, 5-bis - (trifluoromethyl) -benzoyl chlorides and new 3, 5-bis - (trihalogenomethyl) - and 3,5-dimethylbenzoyl halides. The present invention relates to a process for obtaining 3, 5-bis - (trifluoromethyl) -benzoyl chlorides from the corresponding 3, 5-dimethylbenzoic acids and to the new 3, 5-bis - (trihalogenomethyl) halides. - and 3, 5-dimethylbenzoyl, which are presented here as intermediates. Subsequently, 3,5B-(trifluoromethyl) -benzoyl chlorides will also be designated BTB. BTBs are intermediate products for obtaining pharmaceutical and agrochemical active products as well as photoresist compositions. It is known to obtain the BTBs from the corresponding trichloromethyl-benzoyl chloride in the presence of hydrofluoric acid and a Lewis acid catalyst.