Annelation reactions of 4-alkynylcyclobutenones. Formation of methylenebenzofurans
作者:Simon L. Xu、Meng Taing、Harold W. Moore
DOI:10.1021/jo00021a026
日期:1991.10
Thermolysis of a number of 4-alkynyl-4-(propargyloxy)cyclobutenones is reported. These studies show a remarkable rearrangement to methylenebenzofurans accompanied by remote alkene formation. The mechanism and scope of the reactions are discussed.