Results 81 to 90 of about 29,722,087 (208)

C−H Bond Activation by Iridium(III) and Iridium(IV) Oxo Complexes [PDF]

Oxidation of an iridium(III) oxo precursor enabled the structural, spectroscopic, and quantum-chemical characterization of the first well-defined iridium(IV) oxo complex.
Verplancke, H., Schneider, S., Fitterer, A., Holthausen, M.C., Delony, D., de Bruin, B., Tepaske, M.A., Neben, M.C., Tepaske, Martijn A., Holthausen, Max C., Delony, Daniel, Neben, Marc C., Fitterer, Arnd, Verplancke, Hendrik, de Bruin, Bas, Schneider, Sven   +15 more
core   +1 more source

Activation of an Alkyl C−H Bond Geminal to an Agostic Interaction: An Unusual Mode of Base-Induced C−H Activation

, 2016
Activation of an Alkyl C−H Bond Geminal to an Agostic Interaction: An Unusual Mode of Base-Induced C−H ...
Michael K. Whittlesey (1309881), Stuart A. Macgregor (1350846), Mary F. Mahon (1293876), L. Jonas L. Häller (2240983), Michael J. Page (1629457)   +4 more
core   +2 more sources

Solvent-Controlled Selectivity toward Exclusive C−C or C−H Bond Activation by a Cationic Metal Center

, 2016
Solvent-Controlled Selectivity toward Exclusive C−C or C−H Bond Activation by a Cationic Metal ...
Boris Rybtchinski (411894), David Milstein (1599538)   +1 more
core   +1 more source

Arylic C–X Bond Activation by Palladium Catalysts: Activation Strain Analyses of Reactivity Trends

Scientific Reports, 2018
We have quantum chemically explored arylic carbon–substituent bond activation via oxidative insertion of a palladium catalyst in C6H5X + PdLn model systems (X = H, Cl, CH3; Ln = no ligand, PH3, (PH3)2, PH2C2H4PH2) using relativistic density functional ...
Pascal Vermeeren, Xiaobo Sun, F. Matthias Bickelhaupt   +2 more
doaj   +1 more source

Ruthenium(II)-Catalysed sp2 C–H Bond Functionalization by C–C Bond Formation

, 2014
International audienceThe selective catalytic activation/functionalization of sp2 C–H bonds is expected to improve synthesis methods by better step number and atom economy.
Li, Bin, Dixneuf, Pierre H., Pierre H. Dixneuf, Bin Li   +3 more
core   +1 more source

Synthesis and Photocatalytic sp³ C-H Bond Functionalization of Salen-Ligand-Supported Uranyl(VI) Complexes

Molecules
Recent years have seen increasing interest in uranyl(VI) photocatalysis. In this study, uranyl complexes were successfully synthesized from ligands L1–L6 and UO2(NO3)2·6H2O under reflux conditions, yielding products 1–6 with yields ranging from 30% to 50%
Jialu He, Xingxing Gong, Yafei Li, Qianyi Zhao, Congqing Zhu   +4 more
doaj   +1 more source

C–H Bond Activation Followed by C–C and C–O Bond Formation

, 2013
An efficient Cu(I)-catalyzed synthesis of 3-aroylindoles has been achieved from o-alkynylated N,N-dimethylamines via a sp3 C–H bond activation α to the nitrogen atom followed by an intramolecular nucleophilic attack with the alkyne using an aqueous ...
Srimanta Guin, Guin, Srimanta, Rout, Saroj Kumar, Gogoi, Anupal, Bhisma K. Patel, Anupal Gogoi, Saroj Kumar Rout, Patel, Bhisma K.   +7 more
core   +1 more source

High‐Valent Copper Catalysis Enables Regioselective Fluoroarylation of Gem‐Difluorinated Cyclopropanes

Advanced Science
Transition‐metal (TM) catalyzed reaction of gem‐difluorinated cyclopropanes (gem‐DFCPs) has drawn much attention recently. The reaction generally occurs via the activation of the distal C─C bond in gem‐DFCPs by a low‐valent TM through oxidative addition,
Xiuli Wu, Xiangyu Song, Ying Xia
doaj   +1 more source

Nonprecious Single Atom Catalyst for Methane Pyrolysis

Molecules
The development of a suitable catalytic system for methane pyrolysis reactions requires a detailed investigation of the activation energy of C-H bonds on catalysts, as well as their stability against sintering and coke formation.
Naomi Helsel, Sanchari Chowdhury, Pabitra Choudhury   +2 more
doaj   +1 more source

Synthesis of Heteroannulated Indolopyrazines through Domino N–H Palladium-Catalyzed/Metal-Free Oxidative C–H Bond Activation

ACS Omega, 2020
Yuriy A. Kvashnin, Egor V. Verbitskiy, Ekaterina F. Zhilina, Gennady L. Rusinov, Oleg N. Chupakhin, Valery N. Charushin   +5 more
doaj   +1 more source