Results 251 to 260 of about 28,139,738 (307)

Activation of Inert C—H Bonds

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Fumitoshi Kakiuchi, Naoto Chatani
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Metal-catalysed C–H bond activation and borylation

Chemical Society Reviews, 2022
Transition metal-catalysed direct borylation of hydrocarbons via C–H bond activation has received a remarkable level of attention as a popular reaction in the synthesis of organoboron compounds owing to their synthetic versatility.
Ranjana Bisht, Chabush Haldar, Mirja Md Mahamudul Hassan, Md Emdadul Hoque, Jagriti Chaturvedi, Buddhadeb Chattopadhyay   +5 more
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C–H bond activation of ethylene by a zirconacycle

Chemical Communications, 2013
The reaction of C2H4 and β-SiH containing azasilazirconacycle Cp2Zr{κ(2)-N(SiHMe2)SiHMeCH2} (3), formed via a γ-abstraction reaction of Cp2Zr{N(SiHMe2)2}H (1), follows an unusual pathway in which a rare σ-bond metathesis reaction of ethylene generates a vinyl intermediate. That species undergoes a β-hydrogen abstraction under the reaction conditions to
KaKing, Yan, Aaron D, Sadow
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The Chemistry of CH Bond Activation on Diamond

Chemistry – An Asian Journal, 2010
AbstractThe surface of hydrogen‐terminated diamond resembles a solid hydrocarbon substrate. Interestingly, the CH bonds on the diamond surface are not as unreactive as that of saturated hydrocarbon molecules owing to its unique surface electronic properties.
Yu Lin, Zhong, Kian Ping, Loh
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Catalytic activation of aromatic CH bonds

Journal of Organometallic Chemistry, 1982
Abstract A new reaction is described, involving oxidative addtion of aromatic bromides to palladium(O), two successive insertions of norbornene, and ring closure to the aromatic carbon ortho to the carbon originally bearing the bromine.
CATELLANI, Marta, CHIUSOLI, Gian Paolo
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C−H Activation for the Construction of C−B Bonds

Chemical Reviews, 2009
A number of studies were conducted to demonstrate C-H activation for the construction of C-B bonds. Investigations revealed that the conversion of C-H bonds to C-B bonds was both thermodynamically and kinetically favorable. The reaction at a primary C-H bond of methane or a higher alkene B 2(OR)4 formed an alkylboronate ester R' -B(OR)2 and the ...
Ibraheem A I, Mkhalid, Jonathan H, Barnard, Todd B, Marder, Jaclyn M, Murphy, John F, Hartwig   +4 more
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CH Bond Activation by f‐Block Complexes

Angewandte Chemie International Edition, 2014
AbstractMost homogeneous catalysis relies on the design of metal complexes to trap and convert substrates or small molecules to value‐added products. Organometallic lanthanide compounds first gave a tantalizing glimpse of their potential for catalytic CH bond transformations with the selective cleavage of one CH bond in methane by bis ...
Polly L, Arnold, Max W, McMullon, Julia, Rieb, Fritz E, Kühn   +3 more
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Oxygen‐Promoted CH Bond Activation at Palladium

Angewandte Chemie International Edition, 2014
Abstract[Pd(P(Ar)(tBu)2)2] (1, Ar=naphthyl) reacts with molecular oxygen to form PdII hydroxide dimers in which the naphthyl ring is cyclometalated and one equivalent of phosphine per palladium atom is released. This reaction involves the cleavage of both CH and OO bonds, two transformations central to catalytic aerobic oxidizations of hydrocarbons ...
Scheuermann, Margaret L., Boyce, David W., Grice, Kyle A., Kaminsky, Werner, Stoll, Stefan, Tolman, William B., Swang, Ole, Goldberg, Karen I.   +7 more
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The activation of CH bonds via RuRu bond fission

Inorganica Chimica Acta, 1996
Abstract Heating the isopropenylbenzene cluster, Ru 3 (CO) 8 (C 9 H 10 ) 1 , in heptane under reflux affords several products in low yield including the new metallacyclic cluster, Ru 3 (CO) 8 (C 9 H 8 ) 2 , in which the fission of an RuRu bond has induced the cleavage of two CH bonds with the concomitant formation of two RuC σ bonds.
Blake, Alexander J., Dyson, Paul J., Gaede, Petra E., Johnson, Brian F.G.   +3 more
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Insights into Sustainable C–H Bond Activation

2021
Over the recent past, the straight functionalization of inert C–H bond has already been identified as an advanced technique for the synthesis of organic molecules. It has provided a step-, pot- and atom-economic synthetic approach to attain structurally challenging organic scaffolds using simpler, pre-functionalized substrates by single operation and ...
Dewal S. Deshmukh, Vaishali S. Shende, Bhalchandra M. Bhanage   +2 more
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