Basic ionic liquid promoted one-step synthesis of 2-alkylsubstituted Chromanones

S. G. Patil, R. R. Bagul, M. S

Abstract

Basic ionic liquid catalyzed synthesis of various 2-alkyl-substituted chromanones is described. This investigation comprises of two consecutive reactions in one-step by using basic ionic liquid, [bmIm]OH. It acts as a catalyst for condensation of ortho-acylphenols with terminal alkynoates, followed by intramolecular cyclization. Reusability of catalyst with good yields under green reaction conditions is the most remarkable feature of this synthetic method.