Regioselective Mercury(I)/Palladium(II)-Catalyzed Single-Step Approach for the Synthesis of Imines and 2-Substituted Indoles
作者:Rsuini U. Gutiérrez、Mayra Hernández-Montes、Aarón Mendieta-Moctezuma、Francisco Delgado、Joaquín Tamariz
DOI:10.3390/molecules26134092
日期:——
An efficientsynthesis of ketimines was achieved through a regioselective Hg(I)-catalyzed hydroamination of terminal acetylenes in the presence of anilines. The Pd(II)-catalyzed cyclization of these imines into the 2-substituted indoles was satisfactorily carried out by a C-H activation. In a single-step approach, a variety of 2-substituted indoles were also generated via a Hg(I)/Pd(II)-catalyzed,
Synthesis of Indoles through Domino Reactions of 2‐Fluorotoluenes and Nitriles
作者:Jianyou Mao、Zhiting Wang、Xinyu Xu、Guoqing Liu、Runsheng Jiang、Haixing Guan、Zhipeng Zheng、Patrick J. Walsh
DOI:10.1002/anie.201904658
日期:2019.8.5
chemistry, and therefore, novel and efficient approaches to their synthesis are in high demand. Among indoles, 2‐aryl indoles have been described as privileged scaffolds. Advanced herein is a straightforward, practical, and transition‐metal‐free assembly of 2‐aryl indoles. Simply combining readily available 2‐fluorotoluenes, nitriles, LiN(SiMe3)2, and CsF enables the generation of a diverse array of indoles
“On Water” Direct and Site-Selective Pd-Catalysed CH Arylation of (NH)-Indoles
作者:Lionel Joucla、Nelly Batail、Laurent Djakovitch
DOI:10.1002/adsc.201000512
日期:2010.11.22
communication describes the development of a versatile catalytic system based on palladium(II) acetate/bis(diphenylphosphino)methane [Pd(OAc)2/dppm] that works “on water” giving site-selective CH arylation of (NH)-indoles without protecting or directing groups. Remarkably, the control of regioselectivity was achieved by small changes in the “extra-catalytic” base/halide partners. These innovative methodologies
Pyridylmethylamine-Palladium Catalytic Systems: A Selective Alternative in the C−H Arylation of Indole
作者:Serge Perato、Benjamin Large、Qiao Lu、Anne Gaucher、Damien Prim
DOI:10.1002/cctc.201601275
日期:2017.2.6
A highly efficient pyridylmethylamine‐Pd alternative catalytic system for the C−H arylation of indole was explored. Variously substituted aryl groups were regio‐ and chemoselectively installed at the indole nucleus by using barium hydroxide as the base. The method was found to be efficient even in the presence of hindered coupling partners and Pd‐reactive bonds.
Multi-site cyclization via initial C–H activation using a rhodium(<scp>iii</scp>) catalyst: rapid assembly of frameworks containing indoles and indolines
Tandem multi-site cyclization triggered by Rh(iii)-catalyzed C–H activation has been achieved for highly efficient synthesis of spirocycle indolin-3-one (C2-cyclization), benzo[a]carbazole (C3-cyclization) and an unusual indoxyl core (N1-cyclization).