Divergent Phosphine-Catalyzed [2+4] or [3+2] Cycloaddition Reactions of γ-Substituted Allenoates with Oxadienes
作者:Erqing Li、Meijia Chang、Ling Liang、You Huang
DOI:10.1002/ejoc.201403369
日期:2015.2
of the phosphine catalysts, the γ-substitutedallenoates selectively acted as C3 or C2 synthons. Under the catalysis of different organophosphine catalysts, the domino reaction proceeded smoothly with broad substrate tolerance and excellent total yields. The results suggest that the ethyl group of the γ-substitutedallenoates played a key role in the domino reaction.