Room-Temperature Palladium-Catalyzed CH Activation:<i>ortho</i>-Carbonylation of Aniline Derivatives
作者:Chris E. Houlden、Marc Hutchby、Chris D. Bailey、J. Gair Ford、Simon N. G. Tyler、Michel R. Gagné、Guy C. Lloyd-Jones、Kevin I. Booker-Milburn
DOI:10.1002/anie.200805842
日期:2009.2.23
Pd and CO—ureally got me! The title reaction proceeds efficiently at 18 °C under CO (1 atm) with 5 % [Pd(OTs)2(MeCN)2] as precatalyst. Depending on the solvents used, either anthranilates or cyclic imides can be obtained in high yields (see picture, BQ=benzoquinone, Ts=4‐toluenesulfonyl).
Pd 和 CO - 真的抓住了我!标题反应在 18 °C 下在 CO (1 atm) 下有效进行,使用 5% [Pd(OTs) 2 (MeCN) 2 ] 作为预催化剂。根据所使用的溶剂,可以高产率获得邻氨基苯甲酸酯或环状酰亚胺(见图,BQ=苯醌,Ts=4-甲苯磺酰基)。
Rhodium(<scp>iii</scp>)-catalysed aerobic synthesis of highly functionalized indoles from N-arylurea under mild conditions through C–H activation
作者:Subban Kathiravan、Ian A. Nicholls
DOI:10.1039/c4cc06020b
日期:——
arylation of alkynes using copper as the terminal oxidant for regeneration of the catalytically active species under aerobic conditions is described. This novel C-H activation reaction was applied to the synthesis of a wide range of substituted indolesfrom N-arylureas.
Merging C–H Activation and Alkene Difunctionalization at Room Temperature: A Palladium-Catalyzed Divergent Synthesis of Indoles and Indolines
作者:Manash Kumar Manna、Asik Hossian、Ranjan Jana
DOI:10.1021/ol5036968
日期:2015.2.6
A palladium-catalyzed 1,2-carboamination through C–H activation at room temperature is reported for the synthesis of 2-arylindoles, and indolines from readily available, inexpensive aryl ureas and vinyl arenes. The reaction initiates with a urea-directed electrophilic ortho palladation, alkene insertion, and β-hydride elimination sequences to provide the Fujiwara–Moritani arylation product. Subsequently
One-pot synthesis of 2,3-difunctionalized indoles via Rh(<scp>iii</scp>)-catalyzed carbenoid insertion C–H activation/cyclization
作者:Honggui Lv、Jingjing Shi、Bo Wu、Yujuan Guo、Junjun Huang、Wei Yi
DOI:10.1039/c7ob01977g
日期:——
Reported herein is the first Rh(III)-catalyzedcarbenoidinsertionC–H activation/cyclization of N-arylureas and α-diazo β-keto esters. The redox-neutral reaction has the following features: good to excellent yields, broad substrate/functional group tolerance, exclusive regioselectivity, and no need for additional oxidants or additives, which render this methodology as a more efficient and versatile