Results 11 to 20 of about 4,774 (168)

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

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

Ruthenium-catalyzed C–H activation of thioxanthones

open access: yesBeilstein Journal of Organic Chemistry, 2015
Thioxanthones – being readily available in one step from thiosalicylic acid and arenes – were used in ruthenium-catalyzed C–H-activation reaction to produce 1-mono- or 1,8-disubstituted thioxanthones in good to excellent yields.
Danny Wagner, Stefan Bräse
doaj   +1 more source

Ruthenium-Catalyzed Oxidative Synthesis of N-(2-triazine)indoles by C-H Activation

open access: yesMolecules, 2023
1,3,5 triazines, especially indole functionalized triazine derivatives, exhibit excellent activities, such as anti-tumor, antibacterial, and anti-inflammatory activities.
Ming Zeng   +7 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

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

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

Rh(III)-catalyzed directed C–H bond amidation of ferrocenes with isocyanates

open access: yesBeilstein Journal of Organic Chemistry, 2012
[RhCp*(OAc)2(H2O)] [Cp* = pentamethylcyclopentadienyl] catalyzed the C–H bond amidation of ferrocenes possessing directing groups with isocyanates in the presence of 2 equiv/Rh of HBF4·OEt2.
Satoshi Takebayashi   +3 more
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

On the Use of Iron in Organic Chemistry

open access: yesMolecules, 2020
Transition metal catalysis in modern organic synthesis has largely focused on noble transition metals like palladium, platinum and ruthenium. The toxicity and low abundance of these metals, however, has led to a rising focus on the development of the ...
Arnar Guðmundsson, Jan-E. Bäckvall
doaj   +1 more source

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