Two ammonium ionic liquids as efficient catalysts for the one-pot green synthesis of 3,4,5-substituted furan-2(5H)-ones

S Salahi, M Maghsoodlou, N Hazeri, M Lashkari, R Doostmohammadi, A Kanipour, F Farhadpour, A Shojaei
2016 Bulgarian Chemical Communications   unpublished
An efficient and environmentally friendly method for one-pot preparation of 3,4,5-substituted furan-2(5H)-ones is described by condensation of aromatic aldehydes, aromatic amines and dialkyl acetylenedicarboxylates under solvent-free conditions using ammonium ionic liquids as catalysts. This synthetic approach benefits from cleaner reaction profiles, use of easily available, inexpensive, recyclable and environmentally benign catalyst, high yields, and simple experimental and work-up procedures.