Synthesis 2019; 51(17): 3241-3249
DOI: 10.1055/s-0037-1611819
paper
© Georg Thieme Verlag Stuttgart · New York

Reactivity of 3-Bromofuran in Pd-Catalyzed C–H Bond Arylation toward the Synthesis of 2,3,5-Triarylfurans

Authors


A.S. acknowledges the Indo-French Centre for the Promotion of Advanced Research (IFCPAR, No. 5705-1) for a Ph.D. grant and research support. We also thank the CNRS and ‘Rennes Metropole’ for providing financial support.
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Publikationsverlauf

Received: 07. März 2019

Accepted after revision: 06. April 2019

Publikationsdatum:
07. Mai 2019 (online)


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Abstract

Arylation of the C–H bond at the C2 position of 3-bromo­furan is achieved using aryl bromides as coupling partners in the presence of phosphine-free Pd(OAc)2/KOAc in DMA. This procedure gives C2,C5-di- and even C2,C4,C5-triarylated 3-bromofuran derivatives when larger amounts of aryl bromides are employed. In addition, C2,C3,C5-triarylated furans—containing three different aryl groups—are synthesized via a C2–H bond arylation/Suzuki reaction/C5–H bond aryl­ation sequence.

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