Direct and Selective 3-Amidation of Indoles Using Electrophilic <i>N</i>-[(Benzenesulfonyl)oxy]amides
作者:Gerardo X. Ortiz、Brett N. Hemric、Qiu Wang
DOI:10.1021/acs.orglett.7b00358
日期:2017.3.17
Selective C–H amidation of 1H-indoles at the C3 position is reported as a direct entry to biologically important 3-aminoindoles. This transformation is achieved using novel N-[(benzenesulfonyl)oxy]amides as electrophilic nitrogen agents in the presence of ZnCl2. Interestingly, analogous reactions in the absence of ZnCl2 resulted in the formation of indole aminal products.
据报道,在C3位置上1 H吲哚的选择性C–H酰胺化是直接进入具有生物学重要性的3-氨基吲哚的。在ZnCl 2存在下,使用新型N -[(苯磺酰基)氧基]酰胺作为亲电氮试剂可以实现这种转化。有趣的是,在没有ZnCl 2的情况下的类似反应导致吲哚氨基产物的形成。