Results 11 to 20 of about 3,879,991 (283)

Functionalization of Porphyrins Using Metal-Catalyzed C–H Activation

open access: yesInorganics, 2022
The review is devoted to the C–H functionalization of porphyrins. Porphyrins exhibit the properties of organic semiconductors, light energy converters, chemical and electrochemical catalysts, and photocatalysts.
Aleksey N. Kiselev   +3 more
doaj   +1 more source

Rollover Cyclometalation as a Valuable Tool for Regioselective C–H Bond Activation and Functionalization

open access: yesMolecules, 2021
Rollover cyclometalation constitutes a particular case of cyclometallation reaction. This reaction occurs when a chelated heterocyclic ligand loses its bidentate coordination mode and undergoes an internal rotation, after which a remote C–H bond is ...
Antonio Zucca, Maria I. Pilo
doaj   +1 more source

A synthetic, catalytic and theoretical investigation of an unsymmetrical SCN pincer palladacycle [PDF]

open access: yesRoyal Society Open Science, 2016
The SCN ligand 2-{3-[(methylsulfanyl)methyl]phenyl}pyridine, 1, has been synthesized starting from an initial Suzuki–Miyaura (SM) coupling between 3-((hydroxymethyl)phenyl)boronic acid and 2-bromopyridine.
Gavin W. Roffe   +10 more
doaj   +1 more source

Coumarins Synthesis and Transformation via C–H Bond Activation—A Review

open access: yesInorganics, 2022
For several decades, coumarins have attracted considerable attention due to the fact of their application in diverse fields such as medical science and biomedical research as well as several industrial branches.
Katarzyna Szwaczko
doaj   +1 more source

Direct C–H Arylation

open access: yesCHIMIA, 2022
Bonds between hydrogen and carbon atoms are the most frequent type of bonds in organic molecules. The ability to replace hydrogen atoms by making other types of bonds to carbon atoms can enable simpler access to complex organic molecules by substituting
Jyoti Dhankhar, Ilija Čorić
doaj   +1 more source

Ligand Lone-Pair Influence on Hydrocarbon C-H Activation: A Computational Perspective [PDF]

open access: yes, 2010
Mid to late transition metal complexes that break hydrocarbon C-H bonds by transferring the hydrogen to a heteroatom ligand while forming a metal-alkyl bond offer a promising strategy for C-H activation.
Cundari, Thomas R.   +4 more
core   +2 more sources

A catalytic cycle for oxidation of tert-butyl methyl ether by a double C−H activation-group transfer process [PDF]

open access: yes, 2008
A square-planar, iridium(I) carbene complex is shown to effect atom and group transfer from nitrous oxide and organic azides, releasing the corresponding formate or formimidate and an iridium(I)−dinitrogen adduct.
Grubbs, Robert H., Whited, Matthew T.
core   +2 more sources

Intra- and Intermolecular C−H Activation by Bis(phenolate)pyridineiridium(III) Complexes [PDF]

open access: yes, 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

Recent Developments in C–H Activation for Materials Science in the Center for Selective C–H Activation

open access: yesMolecules, 2018
Organic electronics is a rapidly growing field driven in large part by the synthesis of π-conjugated molecules and polymers. Traditional aryl cross-coupling reactions such as the Stille and Suzuki have been used extensively in the synthesis of &pi ...
Junxiang Zhang   +5 more
doaj   +1 more source

Direct Aniline Formation with Benzene and Hydroxylamine

open access: yesChemistry, 2023
A single-step method for aniline formation was examined. Using a vanadate catalyst with an iron oxide co-catalyst and hydroxylamine hydrochloride as the amine source, an up to 90% yield of aniline was obtained with high selectivity.
Ningyu Liu   +2 more
doaj   +1 more source

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