Results 101 to 110 of about 26,559,672 (198)

Speciation‐Controlled C–F Bond Functionalization Enabled by Zwitterionic Pnictinidenes

open access: yesAngewandte Chemie, Volume 138, Issue 39, 21 September 2026.
Zwitterionic pnictinidenes turn C–F activation into C–X bond construction, enabling broad defluorinative functionalization of polyfluoro(hetero)arenes under mild conditions. Rather than following a metallomimetic Sb(I)/Sb(III) redox turnover, catalysis is redirected by ligand scrambling into a redox‐neutral manifold, revealing catalyst speciation as a ...
Irene Sánchez‐Sordo   +4 more
wiley   +2 more sources

Intramolecular Palladium-Catalyzed Alkane C−H Arylation from Aryl Chlorides

open access: yes, 2016
The first examples of efficient and general palladium-catalyzed intramolecular C(sp3)−H arylation of (hetero)aryl chlorides, giving rise to a variety of valuable cyclobutarenes, indanes, indolines, dihydrobenzofurans, and indanones, are described.
Cathleen Pierre (2216746)   +7 more
core   +2 more sources

Palladium-catalyzed picolinamide-directed iodination of remote ortho-C−H bonds of arenes: Synthesis of tetrahydroquinolines

open access: yesBeilstein Journal of Organic Chemistry, 2016
A new palladium-catalyzed picolinamide (PA)-directed ortho-iodination reaction of ε-C(sp2)−H bonds of γ-arylpropylamine substrates is reported. This reaction proceeds selectively with a variety of γ-arylpropylamines bearing strongly electron-donating or ...
William A. Nack   +4 more
doaj   +1 more source

Iron-Catalyzed Direct C-H Arylation of Heterocycles and Quinones with Arylboronic Acids

open access: yes, 2013
The arylation of C-H bonds to generate heteroaryl-aryl (Het-Ar) and arylated quinone (Quin-Ar) compounds has received great attention to achieve sustainable goals in synthetic chemistry.
MANNA, S   +4 more
core   +1 more source

Modular Synthesis of Di‐ and Triazadibenzoazulenes by a Cross‐Coupling/Cycloisomerization Strategy

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Two series of regioisomeric di‐ and triazadibenzoazulenes were prepared from dihalogenated imidazo[1,2‐a]pyridines and imidazo[1,2‐a]pyrazines. Imidazo[1,2‐a]pyridines and imidazo[1,2‐a]pyrazines are important nitrogen‐containing heterocycles with applications in medicinal and materials chemistry.
Karyna Kulyk   +6 more
wiley   +1 more source

Thioketone-directed rhodium(I) catalyzed enantioselective C-H bond arylation of ferrocenes

open access: yesNature Communications, 2019
The development of straightforward methods for the synthesis of planar chiral ferrocenes remains highly challenging. Here, the authors report a rhodium(I)/phosphonate-catalyzed thioketone-directed enantioselective C-H bond arylation reaction for the ...
Zhong-Jian Cai   +4 more
doaj   +1 more source

Advances in conjugated porous polymers via high internal phase emulsion templating

open access: yesPolymer International, EarlyView.
This mini‐review highlights the design, synthesis and potential applications of π‐conjugated polyHIPEs, emphasizing their unique hierarchical structure and tunable properties. The work outlines innovative synthetic strategies and explores their promising roles in photocatalysis and environmental remediation, paving the way for future advancements in ...
Julie‐Lisa Malaval   +4 more
wiley   +1 more source

Regio‐ and Chemoselective Palladium‐Catalyzed Additive‐Free Direct C─H Functionalization of Heterocycles with Chloroaryl Triflates Using Pyrazole‐Alkyl Phosphine Ligands

open access: yesAdvanced Science
A series of new pyrazole‐alkyl phosphine ligands with varying cycloalkyl ring sizes that enable additive‐free regio‐ and chemoselective C─H arylation of heterocycles are reported.
Changxue Gu, Chau Ming So
doaj   +1 more source

C−H Arylation and Methylation of Pivalophenone N−H Imines

open access: yes, 2019
Iron‐catalyzed ortho C−H arylation and methylation reactions of pivalophenone N−H imines are reported. The pivaloyl N−H imine proved an excellent directing group for the arylation with diarylzinc reagents in the presence of an iron‐diphosphine catalyst ...
Wengang Xu   +3 more
core   +1 more source

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