Process for the production of 3,4 'dihydroxybenzophenone as an intermediate for the production of 3,4'diacetoxybenzophenone

摘要

Meta - by reacting in the presence of protic acids and Lewis acids and phenolic hydroxy benzoic acid, and methods of synthesizing the 3,4 '-dihydroxy benzophenone. When the reaction was complete, to remove a proton acid and a Lewis acid, then contacted with ammonium hydroxide and water (temperature of 10 ℃ below) 3,4 '-dihydroxy-benzophenone of the reaction product and then filtered. Can then be reacted with an acetylating agent in the presence of activated carbon and inorganic acids, the filtration material to produce a 3,4 '-diacetoxy benzophenone.