One-Pot Organocatalytic Asymmetric Synthesis of 1H-Pyrrolo[1,2a]indol-3(2H)-ones via a Michael-Hemiaminalization-Oxidation Sequence
作者:Dieter Enders、Chuan Wang、Xuena Yang、Gerhard Raabe
DOI:10.1055/s-0030-1259326
日期:2011.3
An efficient one-pot organocatalytic asymmetric synthesis of 1,2-cis-disubstituted 1H-pyrrolo[1,2a]indol-3(2H)-ones in moderate to good overall yields (49-68%) is presented. The Michael-hemiaminalization-oxidation sequence occurs with very high asymmetric induction and, after purification, virtually stereoisomerically pure products were obtained (>98% de, >99% ee).
本文介绍了一种高效的一锅法有机催化不对称合成1,2-顺式二取代1H-吡咯并[1,2a]吲哚-3(2H)-酮的方法,总收率中等至良好(49-68%)。迈克尔-半氨基化-氧化反应序列具有很高的不对称诱导率,纯化后几乎获得了立体纯度很高的产物(de>98%,ee>99%)。