A SIMPLE N-SUBSTITUTION OF PYRROLE AND INDOLE USING BASIC IONIC LIQUID [BMIM] [OH] AS CATALYST AND GREEN SOLVENT

In basic ionic liquids, 1-methyl-3-butylimidazolium hydroxide, [BmIm][OH], pyrrole and indole replaced the halogen atom of an alkyl halide to give the corresponding N-substituted pyrrole and indole in excellent yield. Benzenesulfonyl chloride, p-methylbenzenesulfonyl chloride and benzoyl chloride reacted similarly with pyrroles to afford the N-substituted pyrroles in quantitative yield.