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.
Marchalin, Stefan; Kuthan, Josef, Collection of Czechoslovak Chemical Communications, 1985, vol. 50, # 8, p. 1870 - 1877
作者:Marchalin, Stefan、Kuthan, Josef
DOI:——
日期:——
Phosphine-Mediated Sequential Annulation Reaction: Access to Functionalized Benzofurans and 4,5-Dihydrobenzofurans
作者:Ling Liang、Xuelin Dong、You Huang
DOI:10.1002/chem.201701026
日期:2017.6.12
A new strategy for the facile access to multi‐functionalized benzofurans and 4,5‐dihydrobenzofurans has been explored. The advantages of the present protocol include readily obtainable starting materials, mild and metal‐free conditions, expedient and practical processes, excellent yields, and easy scale‐up. The reaction demonstrated high efficiency to construct two rings in a single step. The zwitterionic