α-Haloenol Acetates: Versatile Reactants for Oxetan-2-one, Azetidin-2-one and Isoxazolidin-5-one Synthesis
作者:Romain Bejot、Siddam Anjaiah、J. R. Falck、Charles Mioskowski
DOI:10.1002/ejoc.200600708
日期:2007.1
ketene equivalents, namely α-haloenol acetates, are investigated as both nucleophilic and electrophilic reactants in a tandem aldol–lactonization reaction. Diethylaluminum ethoxide proves to be an efficient promoter for the aldol reaction with a wide range of substrates, including inter alia, aldehydes, ketones, imines, nitrones and oximes, leading to oxetan-2-ones, azetidin-2-ones and isoxazolidin-5-ones