Stabilized Sulfur Ylide Mediated Cyclopropanations and Formal [4+1] Cycloadditions of 3-Acyl-2<i>H</i>-chromenones and Their Imines
作者:Xiang-Suo Meng、Shan Jiang、Xiao-Yun Xu、Qiang-Xian Wu、Yu-Cheng Gu、De-Qing Shi
DOI:10.1002/ejoc.201600759
日期:2016.10
Stabilizedsulfurylidemediatedcyclopropanation and formal [4+1] cycloaddition of 3-acyl-2H-chromenones and their imines were explored. The transformations could be performed under mild conditions and were shown to have wide substrate scopes and significant functional-group tolerance; furthermore, the reactions proceeded with excellent regioselectivity. Thus, they are powerful methods for the one-pot