N-Heterocyclic Carbene Catalyzed Homoenolate-Addition Reaction of Enals and Nitroalkenes: Asymmetric Synthesis of 5-Carbon-Synthon δ-Nitroesters
作者:Biswajit Maji、Li Ji、Siming Wang、Seenuvasan Vedachalam、Rakesh Ganguly、Xue-Wei Liu
DOI:10.1002/anie.201203449
日期:2012.8.13
Synthesizing synthons: The highly enantioselective title reaction is described. It employs catalytic amounts of N‐heterocyclic carbene precursors and transforms a broad range of nitroalkenes, such as nitrodienes, nitroenynes, and nitrostyrenes, through reaction with a broad range of enals, into δ‐nitroesters via homoenolate intermediates (see scheme).
合成合成子:描述了高度对映选择性的标题反应。它利用催化量的N杂环卡宾前体,通过与多种烯类反应,通过均烯酸酯中间体将多种硝基链烯(如硝基二烯,硝基炔和硝基苯乙烯)转化为δ-硝基酯(参见方案)。