Results 41 to 50 of about 3,066,437 (179)

A copper-catalyzed arylation of tryptamines for the direct synthesis of aryl pyrroloindolines [PDF]

Chemical Science, 2012
An operationally simple, copper-catalyzed arylation of N-tosyltryptamines provides direct access to C3-aryl pyrroloindolines. A range of electron-donating and electron-withdrawing substituents is tolerated on both the indole backbone and the aryl electrophile.
Kieffer, Madeleine E., Chuang, Kangway V., Reisman, Sarah E.   +2 more
openaire   +4 more sources

Phosphine-Free Palladium-Catalyzed Direct C-3 Arylation of 2-Phenylimidazo[1,2-a]pyridine Using Silver(I) Carboxylate

Journal of Chemistry, 2013
Phosphine-free palladium-catalyzed direct arylation of 2-phenyl-imidazo[1,2-a]pyridine has been developed with the concept of using silver(I) carboxylate.
Sridevi Kona, Rama Suresh Ravi, Manab Chakravarty, Venkata N. R. Chava   +3 more
doaj   +1 more source

Efficient synthesis of π-conjugated molecules incorporating fluorinated phenylene units through palladium-catalyzed iterative C(sp2)–H bond arylations

Beilstein Journal of Organic Chemistry, 2015
We report herein a two or three step synthesis of fluorinated π-conjugated oligomers through iterative C–H bond arylations. Palladium-catalyzed desulfitative arylation of heteroarenes allowed in a first step the synthesis of fluoroaryl-heteroarene units ...
Fatiha Abdelmalek, Fazia Derridj, Safia Djebbar, Jean-François Soulé, Henri Doucet   +4 more
doaj   +1 more source

Regioselective Direct C−H Bond (Hetero)arylation of Thiazoles Enabled by a Novel Iminopyridine-Based α‐Diimine Nickel(II) Complex Evaluated by DFT Studies. [PDF]

, 2023
Direct C−H bond arylation is a highly effective method for synthesizing arylated heteroaromatics. This method reduces synthetic steps and minimizes the formation of impurities. We report an air and moisture-stable iminopyridine-based α-diimine nickel (II)
John , Michael O. Cue, Md Muktadir , Talukder, Mihaela , C. Stefan, Shubham, Chatterjee, Phillip , Damien E. Arche, Justin, T. Miller, Richard , Lord, G. Andrés , Cisneros, Chinthaka , M. Udamulle Gedara, Michael , C. Biewer   +9 more
core   +2 more sources

A visible-light-induced, metal-free bis-arylation of 2,5-dichlorobenzoquinone

Beilstein Journal of Organic Chemistry, 2021
A metal-free protocol for the direct bis-arylation of 2,5-dichlorobenzoquinone with aryldiazonium salts is reported. The reactive salts are generated in situ and converted to radicals through irradiation with visible light.
Pieterjan Winant, Wim Dehaen
doaj   +1 more source

Palladium-Catalyzed Direct (Het)arylation Reactions of Benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole and 4,8-Dibromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole)

Molecules, 2023
Palladium-catalyzed direct (het)arylation reactions of strongly electron-withdrawing tricyclic benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole) and its 4,8-dibromo derivative were studied; the conditions for the selective formation of mono- and bis-aryl ...
Timofey N. Chmovzh, Timofey A. Kudryashev, Daria A. Alekhina, Oleg A. Rakitin   +3 more
doaj   +1 more source

Recent Developments in C–H Activation for Materials Science in the Center for Selective C–H Activation

Molecules, 2018
Organic electronics is a rapidly growing field driven in large part by the synthesis of π-conjugated molecules and polymers. Traditional aryl cross-coupling reactions such as the Stille and Suzuki have been used extensively in the synthesis of &pi ...
Junxiang Zhang, Lauren J. Kang, Timothy C. Parker, Simon B. Blakey, Christine K. Luscombe, Seth R. Marder   +5 more
doaj   +1 more source

Direct Action Network : against corporate globalization

, 1999
Alternative title: [Fund raising letter]. Cosponsors include: Global Exchange, Rainforest Action Network, Ruckus Society, Project Underground, National Lawyers Guild, CISPES, IWW (Seattle), Green Party (Seattle), Earth First!
Direct Action Network (DAN)
core   +3 more sources

Intramolecular direct arylation [PDF]

, 2017
The research conducted for this thesis has led to the development of an intramolecular gold-catalysed direct arylation protocol whereby tethered arenes and aryltrimethylsilanes are coupled (Scheme 1).
Corrie, Thomas James Alexander
core   +3 more sources

Pd−Xantphos-Catalyzed Direct Arylation of Nucleosides

, 2016
Direct arylation of the exocyclic amino groups of nucleosides represents a simple approach to N-aryl nucleoside derivatives. To date, one limitation has been that only electron-deficient aryl bromides and triflates possessed adequate reactivity for ...
Felix N. Ngassa (2510620), Mahesh K. Lakshman (1554784), Edmund A.-H. Yeh (2300611), Theothora S. Melistas (2526742), Kyle A. DeKorver (1944499)   +4 more
core   +1 more source