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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Palladium-Based Catalytic System for the Direct C3-Arylation of Furan-2-carboxamides and Thiophene-2-carboxamides
ChemCatChem, Volume 4, No. 6, Year 2012
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Description
The palladium-catalyzed direct arylation of furans or thiophenes that contained secondary carboxamides at the C2 position proceeded regioselectively at either the C3 or C5 positions, depending on the reaction conditions. The nature of the base was crucial for controlling the regioselectivity of the reaction. We had previously observed that, in the presence of potassium acetate, direct arylation at the C5 position was favored. Herein, we report that the use of cesium carbonate as the base and xylene as the solvent selectively afforded the C3-arylated furans or thiophenes. The reactivity of furan-2-carboxamides and thiophene-2-carboxamides were similar. The reaction tolerated a range of functional groups on the aryl bromide and also heteroaryl bromide substrates. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Authors & Co-Authors
SiLarbi, Karima
Algeria, Algiers
Université Des Sciences et de la Technologie Houari Boumediene
France, Rennes
Université de Rennes
Fu, Hai Yan
China, Chengdu
Key Laboratory of Green Chemistry and Technology, Ministry of Education
Laidaoui, Nouria
Algeria, Oran
Université Oran 1
France, Rennes
Université de Rennes
Beydoun, Kassem
France, Rennes
Université de Rennes
Miloudi, Abdellah
Algeria, Oran
Université Oran 1
ElAbed, Douniazad
Algeria, Oran
Université Oran 1
Djabbar, Safia
Algeria, Algiers
Université Des Sciences et de la Technologie Houari Boumediene
Doucet, Henri
France, Rennes
Université de Rennes
Statistics
Citations: 49
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1002/cctc.201100491
e-ISSN:
18673899