Oxaziridine-Mediated Oxyamination of Indoles: An Approach to 3-Aminoindoles and Enantiomerically Enriched 3-Aminopyrroloindolines
作者:Tamas Benkovics、Ilia A. Guzei、Tehshik P. Yoon
DOI:10.1002/anie.201004635
日期:2010.11.22
A radical solution: A highly regioselective copper(II)‐catalyzed oxyamination of N‐acyl indoles with oxaziridines gave aminal products that could be converted in a single step into 3‐aminoindoles and 3‐aminopyrroloindolines (see scheme). When a chiral N‐acyl group was used, the core fragment of some architecturally fascinating pyrroloindoline alkaloids was formed with 91 % ee. Bs=benzenesulfonyl, Moc=methoxycarbonyl
自由基解决方案:高度区域选择性的铜(II)催化的N-酰基吲哚与氧氮丙啶的氧胺化产生的氨基产物可以在一步中转化为 3-氨基吲哚和 3-氨基吡咯并二氢吲哚(参见方案)。当使用手性N-酰基基团时,一些结构上引人入胜的吡咯并二氢吲哚生物碱的核心片段形成了 91% 的 ee。Bs=苯磺酰基,Moc=甲氧基羰基。