1198113-29-9Relevant academic research and scientific papers
Monodisperse CuPd alloy nanoparticles supported on reduced graphene oxide as efficient catalyst for directed C?H activation
Wang, Feifan,Huang, Fei,Yu, Yingliang,Zhou, Shuangliu,Wang, Zhenghua,Zhang, Wu
, (2021/03/01)
The palladium-catalyzed selective activation of C–H bonds is of great importance for the construction of diverse bioactive molecules. Herein, monodisperse CuPd alloy nanoparticles supported on reduced graphene oxide have been used as high efficient and re
Rhodium(III)-Catalyzed Selective C-H Acetoxylation and Hydroxylation Reactions
Wu, Yunxiang,Zhou, Bing
supporting information, p. 3532 - 3535 (2017/07/17)
An efficient Cp?Rh(III)-catalyzed, chelation-assisted C(sp2)-H acetoxylation and hydroxylation reaction has been developed for the first time. The reaction proceeds under mild conditions and allows for selective preparation of C-H acetoxylation
On the mechanism of palladium-catalyzed aromatic C-H oxidation
Powers, David C.,Xiao, Daphne Y.,Geibel, Matthias A. L.,Ritter, Tobias
supporting information; experimental part, p. 14530 - 14536 (2010/12/18)
The mechanism of Pd-catalyzed aromatic C-H oxidation chemistry continues to be vigorously discussed. Historically, Pd(II)/Pd(IV) catalysis cycles have been proposed. Herein, we present a detailed study of Pd(OAc)2-catalyzed aromatic C-H chlorination and propose dinuclear Pd(III) complexes as intermediates. We have identified a succinate-bridged dinuclear Pd(II) complex, which self-assembles during catalysis, as the catalyst resting state. In situ monitoring of catalysis has revealed that chlorination proceeds with turnover-limiting oxidation of a dinuclear resting state, and that acetate ions, liberated during the formation of the catalyst resting state, catalyze the bimetallic oxidation. Informed by reaction kinetics analysis, relevant dinuclear Pd(III) complexes have been prepared and observed to undergo selective C-Cl reductive elimination. Based on the combination of kinetic data obtained during catalysis and explicit structural information of relevant intermediates, we propose a Pd(II)2/Pd(III)2 catalysis cycle for Pd(OAc)2-catalyzed aromatic C-H chlorination.
Bimetallic palladium catalysis: Direct observation of Pd(III)-Pd(III) intermediates
Powers, David C.,Geibel, Matthias A. L.,Klein, Johannes E. M. N.,Ritter, Tobias
supporting information; experimental part, p. 17050 - 17051 (2010/03/25)
(Chemical Equation Presented) PhI(OAc)2 is a common oxidant for Pd-catalyzed C-H bond functionalizations. Mechanistic hypotheses since the 1960s have suggested a Pd(II)/Pd(IV) mechanism. Here we present evidence for the relevance of bimetallic Pd(III) complexes to catalysis. A bimetallic Pd(III) acetate was isolated and can afford product by bimetallic reductive elimination.
