Results 21 to 30 of about 123,266 (262)

Tuning Benzylic C−H Functionalization of (Thio)xanthenes with Electrochemistry

open access: yesMolecules, 2023
Here, we report a tunable electrochemical benzylic C−H functionalization of (thio)xanthenes with terminal alkynes and nitriles in the absence of any catalyst or external chemical oxidant.
Changji Wang   +4 more
doaj   +1 more source

Recent advances in transition-metal-free C–H functionalization of imidazo[1,2-a]pyridines

open access: yesGreen Synthesis and Catalysis, 2022
Imidazo[1,2-a]pyridines are unique nitrogen-containing organic compounds with wide applications in pharmaceuticals, natural products, material science and organometallics.
Linlin Shi, Tiantian Li, Guang-Jian Mei
doaj   +1 more source

Ru-Catalyzed Selective C–H Functionalization of Pyridotriazoles with Acrylates

open access: yesSynOpen, 2021
Ruthenium-catalyzed efficient and selective C–H alkenylation of pyridotriazoles with acrylates is described. The combination of metals (Ru and Fe) plays a crucial role in achieving quantitative yields of the desired products.
Abhisek Joshi   +2 more
doaj   +1 more source

Recent Advances on Synthetic Methodology Merging C–H Functionalization and C–C Cleavage

open access: yesMolecules, 2020
The functionalization of C–H bonds has become a major thread of research in organic synthesis that can be assessed from different angles, for instance depending on the type of catalyst employed or the overall transformation that is carried out.
Hamid Azizollahi   +1 more
doaj   +1 more source

When metal-catalyzed C–H functionalization meets visible-light photocatalysis

open access: yesBeilstein Journal of Organic Chemistry, 2020
While aiming at sustainable organic synthesis, over the last decade particular attention has been focused on two modern fields, C–H bond activation, and visible-light-induced photocatalysis.
Lucas Guillemard, Joanna Wencel-Delord
doaj   +1 more source

Photoredox C–H functionalization leads the site-selective phenylalanine bioconjugation

open access: yesScientific Reports, 2022
Site-selectively chemical bioconjugation of peptides and proteins can improve the therapeutic exploration of modified protein drugs. Only 3.8% natural abundance of phenylalanine in protein and nearly 90% of proteins contain at least one phenylalanine ...
Yue Weng   +3 more
doaj   +1 more source

Diversification of pharmaceutical molecules via late-stage C(sp2)–H functionalization

open access: yesGreen Synthesis and Catalysis, 2023
C–H late-stage functionalization has gradually become a powerful approach for the rapid optimization of lead compounds’ bioactivity. Significant advances in this field have been achieved in the past few years, mainly, the C–H functionalization system in (
Weidong Shang   +3 more
doaj   +1 more source

Organophotoredox-Catalyzed Direct C-H Functionalization of “Drug Prejudice” at Room Temperature

open access: yes, 2020
Organophotocatalytic C─H bond functionalization has attracted lot of attention in the past several years due to the possibility of catalysing reactions in a metal-free environment.
Narendra, Chaubey   +2 more
core   +1 more source

Ligand control of hydrocarbon C-H bond functionalization by uranyl photocatalysts

open access: yes, 2023
The aqueous uranyl dication has long been known to facilitate the UV light-induced decomposition of aqueous VOCs (volatile organic compounds), via the long-lived highly efficient, uranyl excited state.
Polly, Arnold   +8 more
core   +1 more source

Transition-metal-free electrochemical-induced active C(sp3)-H functionalization

open access: yesGreen Chemistry Letters and Reviews, 2023
Direct C–H bond functionalization is the most effective technique to construct C–X (X = C, N, O, S, etc.), which could simplify the conventional synthesis methods.
Xiaolong Ma   +4 more
doaj   +1 more source

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