Results 111 to 120 of about 23,969 (258)

Palladium‐Catalyzed Heck‐Type Double Arylation of 1,2‐Dihydropyridines

Helvetica Chimica Acta, EarlyView.
A Pd‐catalyzed Heck‐type double arylation of 1,2‐dihydropyridines enables concise access to 2‐substituted 3,6‐diarylated scaffolds with high site‐ and regioselectivity. ABSTRACT We report a site‐ and regioselective Heck‐type double arylation of substituted 1,2‐dihydropyridines.
Haining Li, Zackaria Nairoukh
wiley   +1 more source

Metal-free formal synthesis of phenoxazine

Beilstein Journal of Organic Chemistry, 2018
A transition metal-free formal synthesis of phenoxazine is presented. The key step of the sequence is a high-yielding O-arylation of a phenol with an unsymmetrical diaryliodonium salt to provide an ortho-disubstituted diaryl ether.
Gabriella Kervefors, Antonia Becker, Chandan Dey, Berit Olofsson   +3 more
doaj   +1 more source

Advances in conjugated porous polymers via high internal phase emulsion templating

Polymer 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, Michel Granier, Philippe Gerbier, Sébastien Richeter, Sébastien Clément   +4 more
wiley   +1 more source

On Novel Non-Organometallic Aryl Nucleophile in Palladium-Catalyzed Arylation

Chemistry Proceedings
Phenylazocarboxylate is described as a novel non-organometallic aryl nucleophile in palladium-catalyzed arylation.
Didier Villemin, Arnaud Jullien, Nathalie Bar   +2 more
doaj   +1 more source

Palladium Catalyzed Arylation Reactions of meta Photocycloadducts.

, 2004
We describe the first application of a Heck arylation reaction being performed on a meta photocycloadduct. The resulting arylation/fragmentation process leads to the formation of a bridged bicyclic ketone and constitutes a dramatic increase in molecular ...
Richard French, Rupert O. Sims, Rupert O Sims (16064594), Lauriane Dray, Lauriane Dray (16064603), Clive S Penkett (16062764), Stephen J Roome (16099472), Clive S. Penkett, Richard French (16064600), Peter B Hitchcock (16057433), Stephen J. Roome, Peter B. Hitchcock   +11 more
core   +1 more source

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

Responsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen, Siwei Yang, Xiangqian Cui, Ziheng Liu, Hang Wang, Yongqiang Li, Peng He, Miao Wang, Guqiao Ding   +8 more
wiley   +1 more source

Regiocontroled Pd-catalysed C5-arylation of 3-substituted thiophene derivatives using a bromo-substituent as blocking group

Beilstein Journal of Organic Chemistry, 2016
The use of a bromo-substituent as blocking group at the C2-position of 3-substituted thiophenes allows the regioselective introduction of aryl substituents at C5-position via Pd-catalysed direct arylation.
Mariem Brahim, Hamed Ben Ammar, Jean-François Soulé, Henri Doucet   +3 more
doaj   +1 more source

Copper-Catalyzed Oxidative Arylation of Heteroarenes under Mild Conditions Using Dioxygen as Sole Oxidant

, 2011
Copper-Catalyzed Oxidative Arylation of Heteroarenes under Mild Conditions Using Dioxygen as Sole ...
许兆青, 杨帆致, 王哲, 王锐, 余正坤   +4 more
core  

Electrochemical Reductive β‐Arylation and Alkenylation of α‐Branched Acroleins by Primary Amine/Nickel Dual Catalysis

Transformative Chemistry, EarlyView.
A synergistic primary amine/nickel catalysis under electrochemical conditions was developed for cathodic β‐arylation and alkenylation of α‐branched acroleins. The reaction proceeds through β‐enaminyl radicals generated by cathodic reduction of an iminium ion allowing smooth coupling with aryl‐ or alkenyl‐Ni(II) species.
Yingdong Duan, Fanzhu Zeng, Qifeng Lin, Sanzhong Luo   +3 more
wiley   +1 more source

C- versus O-Arylation of an Enol-Lactone Using Potassium tert-butoxide

, 2003
The use of potassium tert-butoxide as the base in arylation reactions of an enollactone with a series of benzyl halides was explored. Our work demonstrates that the ratio of C-arylation to O-arylation varies with the substitution pattern of the aryl ...
Gilles Sauvé, Sanae Ibrahimi, El Moktar Essassi   +2 more
core   +1 more source