A convenient synthesis of sulfonic esters from thiols and disulfides has been described. In situ preparation of
sulfonyl chlorides from thiols is accomplished by oxidation with Chloramin-T, tetra-butylammonium chloride (t-Bu4NCl)
and water. The sulfonyl chlorides are then further allowed to react with phenol derivatives in the same reaction vessel.
Also, a facile synthesis of bis(indolyl)methanes from alcohols using TCCA/KBr/wet-SiO2, and N-substituted pyrroles by
reaction of hexane- 2,5-dione with primary amines has been accomplished under mild condition with excellent yields.
Keywords: Thiols, sulfonic esters, Bis(indolyl)methanes, pyrroles, N-Chloro regents
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