Results 21 to 30 of about 2,467,830 (354)
Coumarins Synthesis and Transformation via C–H Bond Activation—A Review
Inorganics, 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
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CHIMIA, 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
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δ-C(sp3)H Activation of Free Alcohols Enabled by Rationally Designed H-Bond-Acceptor Ligands
, 2023 The ability to employ a wide range of native substrates is essential for the broad application of transition-metal-catalyzed C–H activation. Recent advances have made native carboxylic acids, ketones, and amines amenable to C(sp3)–H activation, but ...
Jin-Quan, Yu +4 more
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C—H Activation of Unbiased C(sp3)—H Bonds
, 2022 The selective functionalization of non-activated C(sp3)—H bonds is a major challenge in chemistry. Here, we have developed an [Au]-catalyzed C(sp3)-H activation of common 1 bromoalkynes into a library of diverse 3D-scaffolds.
Pablo, Barrio +6 more
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Selectivity of C–H Activation and Competition between C–H and C–F Bond Activation at Fluorocarbons [PDF]
Chemical Reviews, 2017 Partially fluorinated alkanes, arenes, and alkenes can be transformed by a variety of transition metal and lanthanide systems. Although the C-H bond is weaker than the C-F bond regardless of the hybridization of the carbon, the reaction of the C-F bond at the metal is usually more exothermic than the corresponding reaction of the C-H bonds.
Odile Eisenstein +2 more
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Direct Aniline Formation with Benzene and Hydroxylamine
Chemistry, 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
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, 2021 C-H bond activation has been established as an attractive strategy to access axially chiral biaryls, and the most straightforward method is direct C-H arylation of arenes.
Xingwei, Li +4 more
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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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, 2023 Photochemically prepared transition-metal complexes are known to be effective at cleaving the strong C-H bonds of organic molecules in room temperature solutions.
Dmitry, Ozerov +19 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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