[Cp*RhCl2]2-catalyzed ortho-C–H bond amination of acetophenone o-methyloximes with primary N-chloroalkylamines: convenient synthesis of N-alkyl-2-acylanilines
A Rh-catalyzed intermolecular coupling of diazomalonates with arene C-H bonds is reported. The reaction is initiated by electrophilic C-H activation, which is followed by coupling of the arylrhodium(III) complex with the diazomalonate. In most cases, arenes with oximes, carboxylic acids, and amines as directing groups cross-couple with diazomalonates with excellent regioselectivities and functional
Rhodium(III)-Catalyzed Intermolecular Direct Amination of Aromatic C–H Bonds with<i>N</i>-Chloroamines
作者:Ka-Ho Ng、Zhongyuan Zhou、Wing-Yiu Yu
DOI:10.1021/ol203046n
日期:2012.1.6
A Rh(III)-catalyzed direct aromatic C-H amination is achieved using N-chloroamines as a reagent. Furthermore, we also developed a one-pot amination protocol Involving In situ chlorination of the secondary amines. The catalytic amination operates at mild conditions with excellent functional group tolerance and regioselectivity.