Process for preparing perchloromethylbenzene
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsShigeo Yoshinaka, Seiji Uchiyama, Masaharu Doya
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Abstract
A process for producing perchloromethylbenzene by reacting a methylbenzene selected from the group consisting of compounds of the formula ##STR1## WHEREIN X is a chlorine or bromine atom, m is a number of 0, 1 or 2, and n is an integer of 1 to 3, And compounds of the above formula wherein the side chain methyl group is partially chlorinated, with chlorine under the irradiation of light containing ultraviolet rays, characterized in that the reaction is carried out in the presence of said perchloromethylbenzene in the reaction system as a solvent.
Claims11
A process for the batchwise or continuous production of a perchloromethylbenzene, which comprises reacting a methylbenzene compound selected from the group consisting of compounds of the formula ##STR5## wherein X is chlorine or bromine, m is zero, 1 or 2 and n is an integer of from 1 to 3,
- and compounds of the above formula wherein the side chain methyl group is partially chlorinated, with chlorine under the irradiation of light containing ultraviolet rays, the initial stage of the reaction being carried out in the presence of said perchloromethylbenzene in the reaction system as a solvent, in an amount of (1) from 0.3 to 15 times the weight of the starting methylbenzene compound when the process is carried out in a batchwise manner or (2) in an amount of from 40 to 99% by weight of the reaction mixture when the process is carried out in a continuous manner.
Dependencies are inferred from the claim text.