2-Imidazolidinone benzofurans as unexpected outcome of the Lewis acid mediated Nenitzescu reaction
作者:Tomas Horsten、Temitayo Omowumi Alegbejo Price、Luc Van Meervelt、Flavio da Silva Emery、Wim Dehaen
DOI:10.1039/d1nj04965h
日期:——
The Lewisacidmediated Nenitzescu reaction with piperazinone enaminoesters surprisingly afforded rearranged 2-imidazolidinone 5-hydroxybenzofurans. The reaction was optimised and a scope study was performed. A one-pot two-step procedure was realised starting directly from 1,2-diaminoethane, diethyl acetylene dicarboxylate and 1,4-benzoquinone. A plausible reaction mechanism is proposed.