One-Step Synthesis of α,β-Unsaturated Imines, Hydrazones, Semicarbazones, and Thiosemicarbazones from 3-Arylidene-1-pyrrolines
摘要
Abstract
A one-step method for the synthesis of α,β-unsaturated imines, hydrazones, semicarbazones, and thiosemicarbazones has been developed based on the reaction of 3-arylidene-1-pyrrolines with 2,3-diaminomaleonitrile, 4-methylpiperazin-1-amine, semicarbazide, and thiosemicarbazide in benzene or ethanol at room temperature. The structures of the obtained compounds were established by 1H and 13C NMR spectroscopy and elemental analysis.