Copper-Catalyzed Ficini [2 + 2] Cycloaddition of Ynamides
作者:Hongyan Li、Richard P. Hsung、Kyle A. DeKorver、Yonggang Wei
DOI:10.1021/ol101418d
日期:2010.9.3
The Ficini [2 + 2] cycloaddition using N-sulfonyl-substituted ynamides is described, featuring the utility of CuCl2 and AgSbF6 as catalysts. This work represents the first successful example of ynamides participating in a thermal [2 + 2] cycloaddition with enones.