Results 41 to 50 of about 4,963,210 (228)
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
An easy direct arylation of 5-pyrazolones
Beilstein Journal of Organic Chemistry, 2013 A mild, efficient and catalytic ligand-free method for the direct arylation of 5-pyrazolones by Pd-catalyzed C–H bond activation is reported. The process smoothly proceeds and yields are moderate to excellent.
Hao Gong +3 more
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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
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Palladium-Catalyzed intramolecular direct arylation of aromatic tertiary amide compounds revisited
Results in Chemistry, 2022 We have investigated the palladium-catalyzed intramolecular direct arylation of three aromatic tertiary amide compounds. For the C–H activation of the benzene ring, heating over 120 °C in the presence of PCy3·HBF4 and PivOH was indispensable, and the ...
Koji Takagi +2 more
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Advanced Synthesis and Catalysis, 2018 Catalyst for Direct Arylation of Heteroaromatics with Aryl Bromides. Abstract: Metal residues are certainly one of the major sources of contamination of products in metal-catalyzed direct arylation reactions.
Shuxin Mao +3 more
semanticscholar +1 more source
Arylation Reactions in the Synthesis of Biologically Important 2,5-Diaryl-1,3,4-Oxadiazoles
Applied Sciences, 2022 Apart from carbon atoms, some cyclic molecules contain other elements and play an extraordinary role in human life. Among these systems, 1,3,4-oxadiazole derivatives deserve special attention due to their biological properties such as antibacterial ...
Monika Olesiejuk, Agnieszka Kudelko
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Direct N9-arylation of purines with aryl halides
Chem. Commun., 2014 The reported protocol is the first to be demonstrated to efficiently couple aryl halides to purines with predictable selectivity.
Larsen, Anders Foller, Ulven, Trond
openaire +4 more sources
Bulletin of the Korean Chemical Society, EarlyView.This review summarizes microwave‐assisted transition‐metal catalysis for constructing N‐ and O‐heterocycles, highlighting rapid C–H and pre‐activated C–X activation, improved selectivity, and green synthetic efficiency. Abstract Microwave‐assisted organic synthesis provides a rapid and sustainable platform for synthesizing various heterocycles ...
Woo‐Jin Park, Ye Ri Han, Hyejeong Lee
wiley +1 more source
Copper-catalyzed CuAAC/intramolecular C–H arylation sequence: Synthesis of annulated 1,2,3-triazoles
Beilstein Journal of Organic Chemistry, 2012 Step-economical syntheses of annulated 1,2,3-triazoles were accomplished through copper-catalyzed intramolecular direct arylations in sustainable one-pot reactions.
Rajkumar Jeyachandran +2 more
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Molecules, 2020 Direct (hetero)arylation (DHA) is playing a key role in improving the efficiency and atom economy of C–C cross coupling reactions, so has impacts in pharmaceutical and materials chemistry.
Adiel Mauro Calascibetta +5 more
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