Results 41 to 50 of about 28,217,704 (208)
Angewandte Chemie, EarlyView.Here we report two nonalternant polycyclic aromatic hydrocarbons (PAH) (1 and 2), which contain two and four consecutive pentagons, respectively. Under acidic conditions, 1 and 2 dimerize to afford the axially chiral dimers AC1 and AC2. The central azulene moiety in both 2 and AC2 shows an unusually short transannular bond of 1.366 Å.
Chang Wang +3 more
wiley +2 more sources
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 +4 more
doaj +1 more source
Angewandte Chemie, EarlyView.Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani +7 more
wiley +2 more sources
Ligand-Enabled, Palladium-Catalyzed Beta-C (sp3)–H Arylation of Weinreb Amides [PDF]
, 2018 We report the development of Pd(II)-catalyzed C(sp3)–H arylation of Weinreb amides. A pyridinesulfonic acid ligand is designed to accommodate the weak, neutral coordinating property of Weinreb amides via preserving the cationic character of Pd center ...
Nikita, Chekshin +3 more
core +2 more sources
Introduction to Spatial Anion Control for Direct C–H Arylation
, 2022 C–H activation of functionally rich molecules without the need for directing groups promises shorter organic syntheses and late-stage diversification of molecules for drug discovery.
Coric, Ilija; https://orcid.org/ +3 more
core +1 more source
Z‐Retentive Enantioselective Rh‐Catalyzed Hydroarylation of E,Z‐Dienes
Angewandte Chemie, EarlyView.The Rh‐catalyzed hydroarylation of conjugated E,Z‐dienoates is found to proceed with high selectivity for addition to the E‐alkene unit. Mechanistic analysis of this Z‐retentive process points towards preferred binding of the E‐alkene unit to a Rh‐aryl species to give rise to the observed selectivity and that Rh‐enolate protonolysis to be turnover ...
Wesley McNutt +4 more
wiley +2 more sources
Direct arylation catalysis with chloro[8-(dimesitylboryl)quinoline-κN]copper(I)
Beilstein Journal of Organic Chemistry, 2016 We report direct arylation of arylhalides with unactivated sp2 C–H bonds in benzene and naphthalene using a copper(I) catalyst featuring an ambiphilic ligand, (quinolin-8-yl)dimesitylborane.
Sem Raj Tamang, James D. Hoefelmeyer
doaj +1 more source
“On Water” Palladium Catalyzed Direct Arylation of 1H-Indazole and 1H-7-Azaindazole
Molecules, 2020 The C3 direct arylation of 1H-indazole and 1H-7-azaindazole has been a significant challenge due to the lack of the reactivity at this position. In this paper, we describe a mild and an efficient synthesis of new series of C3-aryled 1H-indazoles and C3 ...
Khadija Gambouz +7 more
doaj +1 more source
Palladium-catalyzed α-arylation of arylketones at low catalyst loadings [PDF]
, 2014 The authors thank the ERC (Advanced Researcher award-FUNCAT), 7th Framework Program NMP2-LA-2010–246461 (SYNFLOW) and King Saud University for funding.A general catalytic protocol for the a-arylation of aryl ketones has been developed.
Nolan, Steven Patrick +10 more
core +1 more source
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 +5 more
doaj +1 more source