CATALYST COMPOSITIONS AND THEIR USE FOR CHLORINATING AROMATIC COMPOUNDS

摘要

A method for ring-halogenating an aromatic compound comprises contacting the aromatic compound with chlorine or bromine in the presence of a catalyst composition, where the catalyst composition comprises at least one salt comprising a metal selected from the group consisting of Group 13 metal; and a counterion derived from an acid having a pKa relative to water of 0 or greater, and at least one organic sulfur compound.