PROCESS FOR PREPARING AROMATIC OR HETEROAROMATIC SULFONYL HALIDES

摘要

A process for preparing an aromatic or heteroaromatic sulfonyl halide of thegeneral formula (3): Ar-(-SO2Y)n by halogenating an aromatic or heteroaromaticmethyl sulfide of the general formula (1): Ar-(-SCH3-mXm)n or an aromatic orheteroaromatic methyl sulfoxide of the general formula (2): Ar-(-SOCH3-mXm)nwith a halogenating agent in the presence of water (wherein Ar is anoptionally substituted aromatic or heteroaromatic ring; X and Y are eachhalogeno; m is an integer of 0 to 3; and n is 1 or 2). This process enablesindustrial, uncostly and easy production of aromatic or heteroaromaticsulfonyl halides.