Results 21 to 30 of about 834,266 (345)
Competitive Activation of a Methyl C−H Bond of Dimethylformamide at an Iridium Center [PDF]
, 2009 During the synthesis of [AsPh_4][Ir(CO)_2I_3Me] by refluxing IrCl_3·3H_2O in DMF (DMF = dimethylformamide) in the presence of aqueous HCl, followed by sequential treatment with [AsPh_4]Cl, NaI, and methyl iodide and finally recrystallization from ...
Bercaw, John E. +4 more
core +1 more source
Intra- and Intermolecular C−H Activation by Bis(phenolate)pyridineiridium(III) Complexes [PDF]
, 2011 A bis(phenolate)pyridine pincer ligand (henceforth abbreviated as ONO) has been employed to support a variety of iridium complexes in oxidation states I, III, and IV.
Bercaw, John E. +2 more
core +2 more sources
Long-Range C–H Bond Activation by Rh^(III)-Carboxylates [PDF]
, 2014 Traditional C–H bond activation by a concerted metalation–deprotonation (CMD) mechanism involves precoordination of the C–H bond followed by deprotonation from an internal base. Reported herein is a “through-arene” activation of an uncoordinated benzylic
Fu, Ross +5 more
core +1 more source
Chemical Society Reviews, 2011 The direct functionalization of heterocyclic compounds has emerged as one of the most important topics in the field of metal-catalyzed C-H bond activation due to the fact that products are an important synthetic motif in organic synthesis, the ...
S. Cho +3 more
semanticscholar +1 more source
A unified survey of Si-H and H-H bond activation catalysed by electron-deficient boranes [PDF]
, 2015 The bond activation chemistry of B(C6F5)(3) and related electron-deficient boranes is currently experiencing a renaissance due to the fascinating development of frustrated Lewis pairs (FLPs).
Hermeke, Julia +2 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2019 The Pd-catalyzed C–H bond functionalization of lilolidine was investigated. The use of a palladium-diphosphine catalyst associated to acetate bases in DMA was found to promote the regioselective arylation at α-position of the nitrogen atom of lilolidine ...
Hai-Yun Huang +4 more
doaj +1 more source
C–H Bond Activation at Palladium(IV) Centers [PDF]
Journal of the American Chemical Society, 2011 This communication describes the first observation and study of C-H activation at a Pd(IV) center. This transformation was achieved by designing model complexes in which the rate of reductive elimination is slowed relative to that of the desired C-H activation process.
Joy M, Racowski +2 more
openaire +2 more sources
Low-coordinate iridium NHC complexes derived from selective and reversible C–H bond activation of fluoroarenes [PDF]
, 2015 Interaction of the reactive 14 VE {Ir(IBioxMe4)3}+ fragment with fluoroarenes results exclusively in ortho-C–H bond oxidative addition and formation of 16 VE Ir(III) derivatives [Ir(IBioxMe4)3(Ar)H]+ (Ar = 2-C6H4F, 2,3-C6H3F2, 2,4,6-C6H2F3). The C–H bond
Chaplin, Adrian B. +2 more
core +1 more source
Angewandte Chemie, 2019 Direct selective oxidation of hydrocarbons to oxygenates by O2 is challenging. Catalysts are limited by the low activity and narrow application scope, and the main focus is on active C−H bonds at benzylic positions.
Yitao Dai +4 more
semanticscholar +1 more source
Control of coordinatively unsaturated Zr sites in ZrO2 for efficient C–H bond activation
Nature Communications, 2018 Due to the complexity of heterogeneous catalysts, identification of active sites and the ways for their experimental design are not inherently straightforward but important for tailored catalyst preparation. The present study reveals the active sites for
Yaoyuan Zhang +9 more
semanticscholar +1 more source