Organocatalytic Multiple Cascade Reactions: A New Strategy for the Construction of Enantioenriched Tetrahydrocarbazoles
作者:Yi-Ju Cao、Hong-Gang Cheng、Liang-Qiu Lu、Ji-Ji Zhang、Ying Cheng、Jia-Rong Chen、Wen-Jing Xiao
DOI:10.1002/adsc.201000610
日期:2011.3.7
A novel cascade Friedel–Crafts alkylation/Michael addition/aromatization reaction of 2‐vinylindoles with α,β‐unsaturated aldehydes has been developed for the construction of functionalized tetrahydrocarbazoles. The products were obtained in up to 97% yield and with excellent stereoselectivities (ee up to>99%, dr up to>99:1).
已经开发了一种新颖的级联2-乙烯基吲哚与α,β-不饱和醛的Friedel-Crafts烷基化/ Michael加成/芳构化反应,用于官能化四氢咔唑的构建。获得的产品收率高达97%,并且具有出色的立体选择性(ee高达99%,dr高达> 99:1)。