Results 11 to 20 of about 2,467,830 (354)
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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Photocatalytic C−H activation and C−C coupling of monohydric alcohols
Catalysis Communications, 2021 Monohydric alcohols, such as methanol, ethanol, are useful chemical building blocks that can be facilely produced from various carbon resources. The direct conversion of alcohols into high-value-added chemicals, in particular diols, is attractive but ...
Limei Wang +5 more
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Strategies to transform remote C(sp3)-H bonds of amino acid derivatives
Tetrahedron Chem, 2022 Amino acids and peptides play an important role in nature as well as in the pharmaceutical industry. Therefore, transformation of amino acids and peptides into their unnatural derivatives via step and atom economical ways is highly demanding. Although, a
Supreeta Sen +2 more
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When transition-metal-catalyzed C–H activation meets allene chemistry
Tetrahedron Chem, 2023 Transition-metal-catalyzed allenes-involved C–H functionalizations demonstrate unique selectivity and undergo exceptional pathways due to the existence of elusive orthogonal cumulative CCC bonds.
Shu-Meng Deng +2 more
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Functionalization of Porphyrins Using Metal-Catalyzed C–H Activation
Inorganics, 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
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Molecules, 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
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, 2021 The use of oxygen-based electrophiles in cross-coupling remains challenging for substrates with strong C–O bonds, with few examples that can combine C–O activation with an-other strong-bond activation in tandem.
Nahiane, Pipaon Fernandez +4 more
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Deuteration of Arenes via Pd-Catalyzed C-H Activation: A Lesson in Nondirected C-H Activation, Isotopic Labeling, and NMR Characterization. [PDF]
J Chem EducDeufel F, van Gemmeren M.
europepmc +3 more sources
Transition Metal-catalyzed C-H /C-C Activation and Coupling with 1, 3-diyne
, 2022 This review focuses on providing a broad overview of the recent developments in the field of transition metal-catalyzed C-H bond activation and coupling with 1,3-diyne for assembling alkynylated heterocycles and bis-heterocycles.
Tanmayee, Nanda +4 more
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A synthetic, catalytic and theoretical investigation of an unsymmetrical SCN pincer palladacycle [PDF]
Royal 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
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