Base-Catalyzed Intramolecular 5-<i>exo-dig</i>Cyclization of 2-Propynyl-1,3-dicarbonyl Compounds: An Atom-Economic Route to Stereodefined 2-Methylene-2,3-dihydrofurans
作者:Quan Ma、Yeming Wang、Yuegang Zhao、Peiqiu Liao、Bo Sun、Xihe Bi
DOI:10.1002/ejoc.201402542
日期:2014.8
A new and straightforward base-catalyzed 5-exo-trig cyclization of 2-propynyl-1,3-dicarbonylcompounds leads to the corresponding stereodefined2-methylene-2,3-dihydrofurans in excellent yields.