An efficient and convenient iron-catalyzed protocol has been developed for the synthesis of substituted pyrrolo[1,2-a]quinoxalines from 1-(N-arylpyrrol-2-yl)ethanone O-acetyl oximes through N-O bond cleavage and intramolecular directed C-H arylation reactions in acetic acid.
An efficient and convenient iron-catalyzed protocol has been developed for the synthesis of substituted pyrrolo[1,2-a]quinoxalines from 1-(N-arylpyrrol-2-yl)ethanone O-acetyl oximes through N-O bond cleavage and intramolecular directed C-H arylation reactions in acetic acid.
N-(1-Oxy-2-picolyl)oxalamic acids as a new type of O,O-ligands for the Cu-catalyzed N-arylation of azoles with aryl halides in water or organic solvent
作者:Yongbin Wang、Yu Zhang、Beibei Yang、Ao Zhang、Qizheng Yao
DOI:10.1039/c5ob00045a
日期:——
identified as novel efficient ligands for copper-catalyzed C–N cross-coupling of azoles and arylhalides in water. The N-arylation of imidazoles, indoles and pyrazoles proceeded with moderate to excellent yields and complete selectivity over aromatic amines and phenols. Moreover, L5, which is also efficient in organic solvent with low catalyst loading, can be used to promote the N-arylation reactions with
Ir-catalyzed selective dehydrogenative cross-coupling of aryls with <i>o</i>-carboranes <i>via</i> a mixed directing-group strategy
作者:Yu Chen、Yangjian Quan、Zuowei Xie
DOI:10.1039/d0cc02531c
日期:——
Ir-catalyzed highly selective B–H/C–H cross dehydrogenative coupling between o-carboranes and (hetero)aryls has been achieved using a mixed directing-group strategy.
作者:Zhiguo Zhang、Junlong Li、Guisheng Zhang、Nana Ma、Qingfeng Liu、Tongxin Liu
DOI:10.1021/acs.joc.5b00915
日期:2015.7.2
An efficient and convenient iron-catalyzed protocol has been developed for the synthesis of substituted pyrrolo[1,2-a]quinoxalines from 1-(N-arylpyrrol-2-yl)ethanone O-acetyl oximes through N-O bond cleavage and intramolecular directed C-H arylation reactions in acetic acid.