CuI/[bmim]OAc in [bmim]PF6: A highly efficient and readily recyclable catalytic system for the synthesis of 2,3-disubstituted benzo[b]furans

Abstract: A combination of CuI (10mol%) and [bmim]OAc (20mol%) in [bmim]PF6 was found to be a highly efficient and readily recyclable catalytic system for the synthesis of 2,3-disubstituted benzo[b]furans via three-component tandem reactions of 2-hydroxybenzaldehydes, amines and alkynes. Remarkable advantages of this new strategy include high efficiency, convenient recovery and efficient reuse of the catalytic system. [Copyright &y& Elsevier]