Rhodium(III)-catalyzed internal oxidative coupling of N-hydroxyanilides with alkenes via C–H activation
摘要:
Described herein is an efficient new method for ortho-olefination of anilides in the presence of AgSbF6 and NaOAc via rhodium(III)-catalyzed internal oxidative C-H bond activation based on hydroxyl as directing and oxidative group. A range of alkenes and functional groups on acetanilides is supported and a possible mechanism is proposed according to the experimental results. (C) 2015 Elsevier Ltd. All rights reserved.
Highly Effective Pd-Catalyzed ortho Olefination of Acetanilides: Broad Substrate Scope and High Tolerability
作者:Byung Seok Kim、Chungsik Jang、Dong Jin Lee、So Won Youn
DOI:10.1002/asia.201000613
日期:2010.11.2
Bring it on! An effective Pd‐catalyzed orthoolefination of various acetanilides has been developed. This transformation has a broadsubstratescope and wide functional‐group tolerability, regardless of the electronic and steric properties of acetanilidesubstrates, providing a straightforward access to highly functionalized arenes.
An Rh‐catalyzed selectiveC−H bond activation of diaryl‐substituted anilides is described. In an attempt to achieve C−Hactivation of C‐aryl rings, we unexpectedly obtained an N‐aryl ring product under non‐coordinating anion conditions, whereas the C‐aryl ring product was obtained in the absence of a non‐coordinating anion. This methodology has proved to be an excellent means of tuning and adjusting
Pd(TFA)2-catalyzed oxidative coupling of anilides with olefins through CH bond activation under non-acidic conditions
作者:Xiaoli Yu、Wei Yao、Huida Wan、Zhaojun Xu、Dawei Wang
DOI:10.1016/j.jorganchem.2016.08.025
日期:2016.11
C-H bond activation is an important issue. The Pd-catalyzed and non-coordinating anion improved C-H bond activation was realized through the oxidative coupling reaction of anilides with olefins under non-acidic conditions. Additionally, the catalytic activity of palladium catalysts is enhanced by non-coordinating anions, further proving that non-coordinating anion can be used in palladium-involved reactions. (C) 2016 Elsevier B.V. All rights reserved.