PROCESS FOR THE PREPARATION OF AROMATIC OR HETEROAROMATIC SULFONYL HALIDES

摘要

The present invention provides an aromatic or heteroaromatic sulfonyl of formula (2) comprising halogenating an aromatic or heteroaromatic methyl sulfide of formula (1) or an aromatic or heteroaromatic methyl sulfoxide of formula (3) with a halogenating agent in the presence of water: Relates to a process for preparing a halide:;Formula 1;Formula 2;Formula 3;Where;Ar is an aromatic ring or heteroaromatic ring which is unsubstituted or has any substituents or substituents,;X and Y are halogen atoms,;m is an integer from 0 to 3,;n is 1 or 2.;According to the present invention, aromatic or heteroaromatic sulfonyl halides can be produced inexpensively and easily industrially.