Results 21 to 30 of about 3,879,991 (283)
Formation of Bicyclic Pyrroles from the Catalytic Coupling Reaction of 2,5-disubstituted Pyrroles with Terminal Alkynes, Involving the Activation of Multiple C-H bonds [PDF]
, 2008 Substituted bicyclic pyrroles are produced directly from the coupling reaction of 2,5-disubstituted pyrroles with terminal alkynes, involving the activation of multiple C–H bonds and regioselective ...
Yi, Chase S., Zhang, Jie
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Ruthenium-Catalyzed Oxidative Synthesis of N-(2-triazine)indoles by C-H Activation
Molecules, 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
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Iridium complexes bearing a PNP ligand, favoring facile C(sp^3)–H bond cleavage [PDF]
, 2011 Hydrogen iodide is lost upon reaction of PNP with IrI_3, where PNP = 2,6-bis-(di-t-butylphosphinomethyl)pyridine to give crystallographically characterized Ir(PNP)*(I)_2, which reacts with H_2 to give Ir(PNP)(H)(I)_2.
Goddard, William A., III +4 more
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Hydroarylations by cobalt-catalyzed C–H activation
Beilstein 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
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Molecules, 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
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Tracking C–H activation with orbital resolution
Science, 2023 Transition metal reactivity toward carbon–hydrogen (C–H) bonds hinges on the interplay of electron donation and withdrawal at the metal center. Manipulating this reactivity in a controlled way is difficult because the hypothesized metal-alkane charge-transfer interactions are challenging to access experimentally. Using time-resolved x-ray spectroscopy,
Raphael M. Jay +23 more
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Beryllium-centred C–H activation of benzene
Chemical Communications, 2023 Lithium or sodium reduction of [SiNDippBe] in benzene, provides the organoberyllate products, [{SiNDippBePh}M] (M = Li or Na).
Kyle G. Pearce +2 more
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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
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Photoinduced homolytic C–H activation in N-(4-homoadamantyl)phthalimide
Beilstein 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
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Manganese-Catalyzed C–H Activation
ACS Catalysis, 2016 Manganese is found in the active center of numerous enzymes that operate by an outer-sphere homolytic C–H cleavage. Thus, a plethora of bioinspired radical-based C–H functionalizations by manganese catalysis have been devised during the past decades. In contrast, organometallic C–H activation by means of manganese catalysis has emerged only recently as
Weiping Liu, Lutz Ackermann
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