developed for the synthesis of diversely functionalized dihydro-2-oxypyrroles and tetrahydropyridines. One-pot four-component reaction of dialkyl acetylenedicarboxylates, amines and formaldehyde in the presence of 2,6-pyridinedicarboxylic acid in methanol at room temperature provides dihydro-2-oxypyrroles. The combination of β-ketoesters, aromatic aldehydes and amines yielded tetrahydropyridine derivatives
Abstract An efficient and straightforward procedure has been developed for the synthesis of highly substituted mono- and bis- N -aryl-3-aminodihydropyrrol-2-one-4-carboxylates via a one-pot, four-component domino reaction of amines, dialkyl acetylenedicarboxylates and formaldehyde in the presence of InCl 3 (20 mol%) in MeOH at ambient temperature. The salient advantages of this method are mild reaction
Abstract An efficientsynthesis of polysubstituted dihydropyrrol-2-one derivativesviaone-pot four-component domino reaction of amines, dialkylacetylenedicarboxylates and formaldehyde in the presence of zirconium tetrachloride (ZrCl4) is described. The presented methodology offers several advantages such as simplicity of operation, good to high yields, short reaction times, inexpensive and readily