Results 31 to 40 of about 7,841,789 (286)

Advancing the logic of chemical synthesis: C-H activation as strategic and tactical disconnections for C-C bond construction.

open access: yesAngewandte Chemie, 2020
The design of synthetic routes via retrosynthetic logic is decisively influenced by the transformations available. In this context, transition metal-catalyzed C-H activation has emerged as a powerful strategy for C-C bond formation, with myriad methods ...
Nelson Y. S. Lam, K. Wu, jin-quan yu
semanticscholar   +1 more source

Hydroarylations by cobalt-catalyzed C–H activation

open access: yesBeilstein Journal of Organic Chemistry, 2018
As an earth-abundant first-row transition metal, cobalt catalysts offer a broad range of economical methods for organic transformations via C–H activation.
Rajagopal Santhoshkumar   +1 more
doaj   +1 more source

Regioselective C-H Functionalization of the Six-Membered Ring of the 6,5-Fused Heterocyclic Systems: An Overview

open access: yesMolecules, 2021
The regioselective C-H functionalization of the five-membered ring of the 6,5-fused heterocyclic systems is nowadays well documented due to its high reactivity compared to the six-membered ring.
Soukaina Faarasse   +3 more
doaj   +1 more source

Competitive Activation of a Methyl C−H Bond of Dimethylformamide at an Iridium Center [PDF]

open access: yes, 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

Mild metal-catalyzed C-H activation: examples and concepts.

open access: yesChemical Society Reviews, 2016
Organic reactions that involve the direct functionalization of non-activated C-H bonds represent an attractive class of transformations which maximize atom- and step-economy, and simplify chemical synthesis.
T. Gensch   +3 more
semanticscholar   +1 more source

Photoinduced homolytic C–H activation in N-(4-homoadamantyl)phthalimide

open access: yesBeilstein Journal of Organic Chemistry, 2011
N-(4-homoadamantyl)phthalimide (5) on excitation and population of the triplet excited state underwent intramolecular H-abstractions and gave products 6 and 7.
Nikola Cindro   +4 more
doaj   +1 more source

Hydrogen Motion in Magnesium Hydride by NMR [PDF]

open access: yes, 2008
In coarse-grained MgH2, the diffusive motion of hydrogen remains too slow (
Bormann, Rüdiger   +11 more
core   +1 more source

Enantioselective Rhodium-Catalyzed C–C Bond Activations

open access: yesCHIMIA, 2010
The catalytic activation of carbon–carbon single bonds represents a major challenge in organometallic chemistry. Strained ring substrates occupy in this respect a privileged role as their inherent ring strain facilitates the desired metal ...
Tobias Seiser, Nicolai Cramer
doaj   +1 more source

Divergent isoindolinone synthesis through palladium-catalyzed isocyanide bridging C–H activation

open access: yesCell Reports Physical Science, 2022
Summary: The formation of thermodynamically accessible metallacycle is crucial to achieve site-selective C–H bond activation. Here, we report an isocyanide-bridging C–H activation through the formation of a five-membered palladacycle. As such, a proximal
Fulin Zhang   +6 more
doaj   +1 more source

Carboxylic Solvents and O-Donor Ligand Effects on CH Activation by Pt(II) [PDF]

open access: yes, 2006
We report on the design of more efficient C−H activation catalysts based on DFT calculations. The first examples of well-defined, N,O-donor ligated platinum complexes that are competent for fast C−H activation are detailed.
Goddard, William A., III   +5 more
core   +1 more source

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