N-Heterocyclic Carbene Catalyzed Vinylogous Aldol Reaction of 2-(Trimethylsilyloxy)furan and Aldehydes
作者:Lin He、Guang-Fen Du、Cheng-Zhi Gu、Bin Dai
DOI:10.1055/s-0030-1258551
日期:2010.10
A N-Heterocyclic carbenes (NHC) catalyzed vinylogous aldol reaction between 2-(trimethylsilyloxy)furan and aldehydes has been developed, providing γ-substituted butenolides in high yields with good diastereoselectivities. Furthermore, the catalyst loading can be reduced to 1 mol%.
Diastereoselective Synthesis of <font>γ</font>-Butenolides Catalyzed by Potassium <i>tert</i>-Butoxide
作者:Guang-Fen Du、Lin He、Cheng-Zhi Gu、Bin Dai
DOI:10.1080/00397911.2010.538888
日期:2012.4.15
Abstract Potassiumtert-butoxide (0.1 mol%) catalyzed a vinylogous Mukaiyama aldol reaction between aromatic and aliphatic aldehydes with 2-(trimethylsilyloxy)furan. The corresponding γ-butenolides were obtained in good yields with good diastereoselectivities. GRAPHICAL ABSTRACT