A palladium-catalyzed tandem addition/cyclization of 2-(2-aminoaryl)acetonitriles with arylboronic acids has been developed for the first time, achieving a new strategy for direct construction of indole skeletons. This system shows good functional group tolerance and remarkable chemoselectivity. In particular, the halogen (e.g., bromo and iodo) substituents are amenable to further synthetic elaborations
Intramolecular Cooperative CC Bond Cleavage Reaction of 1,3-Dicarbonyl Compounds with 2-Iodoanilines to Give<i>o</i>-(N-Acylamino)aryl Ketones and Multisubstituted Indoles
作者:Qi Xing、Hui Lv、Chungu Xia、Fuwei Li
DOI:10.1002/chem.201500272
日期:2015.6.1
A copper‐catalyzed CCbondcleavage reaction of 1,3‐dicarbonyl compounds with 2‐iodoanilines was developed. In this process, the ortho effect played an important role in the reactivity and a new reaction pathway that involved a (2‐aminophenyl)‐bis‐(1,3‐dicarbonyl) copper species was clearly observed by a time‐course HRMS analysis of the reaction mixture. Unlike the previous reports, both the nucleophilic