Gold(I) Complexes in Ionic Liquids: An Efficient Catalytic System for the C-H Functionalization of Arenes and Heteroarenes under Mild Conditions
作者:Marco Baron、Andrea Biffis
DOI:10.1002/ejoc.201900529
日期:2019.6.16
Use of ionic liquids allows to boost the reactivity of gold(I) complexes as catalysts in the hydroarylation of alkynes with arenes and heteroarenes, enabling the use of <1 mol‐% catalyst under mild conditions (low temperature, no acid cocatalyst). The catalytic system also exhibits tunable selectivity and recyclability.
Non-redox metal ion promoted oxidative coupling of indoles with olefins by the palladium(<scp>ii</scp>) acetate catalyst through dioxygen activation: experimental results with DFT calculations
作者:Sicheng Zhang、Zhuqi Chen、Shuhao Qin、Chenlin Lou、Ahmed M. Senan、Rong-Zhen Liao、Guochuan Yin
DOI:10.1039/c6ob00401f
日期:——
Pd(II)-catalyzed oxidative coupling previously. Detailed investigations revealed that the reaction proceeds by heterobimetallic Pd(II)/Sc(III)-catalyzed oxidative coupling of an indole with an olefin followed by Sc(III)-catalyzed addition with a second indole molecule. DFT calculations disclosed that the formation of heterobimetallic Pd(II)/Sc(III) species substantially decreases the C–H bond activation
PtCl2-catalyzed reactions of o-alkynylanilines with ethyl propiolate and dimethyl acetylenedicarboxylate
作者:Xun Li、Jun-Yan Wang、Wei Yu、Long-Min Wu
DOI:10.1016/j.tet.2008.11.095
日期:2009.2
The PtCl2-catalyzed reactions between indoles and ethylpropiolate gave rise to mono and double addition products. The composition of the products was largely influenced by the substituents on the indoles as well as the amount of ethylpropiolate used. o-Alkynylanilines reacted with ethylpropiolate and dimethyl acetylenedicarboxylate under the catalysis of PtCl2 to generate the corresponding 2,3-disubstituted
An efficient synthetic method for bisindolyl propanoates has been developed. Ga(DS)(3)-catalysed double hydroarylation of acetylenic esters with indoles in water afforded regioselective products with up to 99% yield. (C) 2015 Published by Elsevier Ltd.
Regioselective synthesis of 3,3-bis(indolyl)propanoic acid derivatives by iron(III)-catalyzed hydroarylation of propynoic acid derivatives with indoles
作者:Md. Shahajahan Kutubi、Tsugio Kitamura
DOI:10.1016/j.tet.2011.08.051
日期:2011.10
Intermolecular hydroarylation of propynoic acid and its esters with indoles proceeded efficiently in acetic acid under a catalytic system of FeCl3/3AgOTf and afforded the corresponding 3,3-bis(indol-3yl) propanoic acids and their esters in high yields. In the case of 2-methylindole, 3-indolylacrylic acid and its ethyl ester were obtained in high yields. This iron-catalyzed hydroarylation showed a high regioselectivity at the 3-position of indoles and a high utility for the synthesis of bis(indol-3-yl) compounds, which are important for biological and pharmaceutical fields. (C) 2011 Elsevier Ltd. All rights reserved.