Results 21 to 30 of about 28,198,830 (257)

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

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

Green Solvents for C-H Functionalization

open access: yes, 2023
Organic solvents are ubiquitous in most of the synthetic processes and play a crucial role in influencing the chemical behavior of catalytic system and/or reactive species. Modern chemistry inevitably includes an evaluation of the chemical efficiency and
Rossini, Gabriele   +3 more
core   +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

Enantioselective Single and Dual a-C–H Bond Functionalization of Cyclic Amines via Enzymatic Carbene Transfer [PDF]

open access: yes, 2022
Cyclic amines are ubiquitous structural motifs found in pharmaceuticals and biologically active natural products, making methods for their elaboration via direct C–H functionalization of considerable synthetic value.
Bo M. , Couture   +5 more
core   +2 more sources

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

Chiral Transient Directing Groups in Transition-Metal-Catalyzed Enantioselective C–H Bond Functionalization

open access: yes, 2020
International audienceTransition metal-catalyzed C-H bond functionalization has known a rapid evolution in the last years, offering new strategies for reaching high molecular complexity in a step-and atom-economical way. Despite the indisputable advances,
Sara Mazeh   +5 more
core   +1 more source

Remote C-H Functionalization of Aliphatic Amines [PDF]

open access: yes
This thesis summarizes our efforts in the development of methodologies aimed at remote C(sp3)–H functionalization of aliphatic amines. Amines are an important functional group present in a variety of biologically relevant molecules; however, examples of ...
Lee, Melissa
core   +5 more sources

Selective ring expansion and C−H functionalization of azulenes

open access: yesNature Communications, 2023
We report a transition metal-catalyzed ring expansion of azulene that can be contrasted with C–H functionalization. This study represents the first example of the successful ring expansion of azulene using Cu(hfacac)2 (hfacac: hexafluoroacetylacetonate ...
Sangjune Park   +7 more
doaj   +1 more source

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