4-Isopropyl-4'-nitrobenzophenone and a process for the preparation of 4'- nitrobenzophenones substituted in the 4-position

摘要

4-Isopropyl-4'-nitrobenzophenone and other benzophenones of the formula ##STR1## wherein R is hydrogen, alkyl having 1 to 20 carbon atoms, alkoxy having 1 to 20 carbon atoms, alkyl having 2 to 20 carbon atoms interrupted by oxygen, or alkoxy having 2 to 20 carbon atoms interrupted by oxygen, are prepared by reacting a substituted benzene compound of the formula ##STR2## with p-nitrobenzoyl halide at temperatures of 10 to 140 C. in the presence of a Friedel- Crafts catalyst and an inert solvent which is an aliphatic hydrocarbon, a chlorinated aliphatic hydrocarbon or chlorinated aromatic hydrocarbon.