Stereoselective Synthesis of 3-Alkylideneoxindoles using Tandem Indium-Mediated Carbometallation and Palladium-Catalyzed Cross-Coupling Reactions
作者:Reiko Yanada、Shingo Obika、Yusuke Kobayashi、Tsubasa Inokuma、Munetaka Oyama、Kazuo Yanada、Yoshiji Takemoto
DOI:10.1002/adsc.200505147
日期:2005.10
the stereoselective synthesis of various (E)-, (Z)-, and disubstituted 3-alkylideneoxindoles via radical cyclization reactions were investigated using tandem indium-mediated carbometallation and palladium-catalyzed cross-coupling reactions. The proper combination of substrates and reaction conditions is important for good yields. The key step is the first stereoselective carboindation reaction using
使用串联铟介导的碳金属化和钯催化的交叉偶联反应,研究了通过自由基环化反应立体选择性合成各种(E)-,(Z)-和二取代的3-亚烷基氧亚吲哚的第一种有效方法。底物和反应条件的适当组合对于获得良好的收率很重要。关键步骤是利用铟阳离子与酰胺羰基氧的强配位能力进行的第一个立体选择性碳氢化反应。我们将此方法应用于TMC-95A前体的合成。N-羟基邻苯二甲酰亚胺-O 2 -Co(OAc)2 -Mn(OAc)的N-脱苄基反应新方法还使用单电子氧化程序开发了图2。