Fused Indolines by Palladium-Catalyzed Asymmetric CC Coupling Involving an Unactivated Methylene Group
作者:Masafumi Nakanishi、Dmitry Katayev、Céline Besnard、E. Peter Kündig
DOI:10.1002/anie.201102639
日期:2011.8.1
Selectivity at high temperatures: Bulky, thermally stable, chiral palladium complexes generated from N‐heterocyclic carbenes (NHCs; see picture) were successfully applied to the synthesis of highly enantioenriched trans‐fused indolines. Remarkably, this reaction occurs at elevated temperatures with excellent asymmetric recognition of an enantiotopic CH bond in an unactivated methylene unit.
选择性在高温下:从N-杂环卡宾产生笨重,热稳定的,手性钯络合物(NHC的;参见图片)被成功地应用到的对映体富集高度合成反式稠合的二氢吲哚。值得注意的是,该反应发生在升高的温度下具有优良的不对称识别一个对映的C 在未活化亚甲基单元H键。