Palladium(II)‐N‐Heterocyclic Carbene Complexes: Efficient Catalysts for the Direct C‐H Bond Arylation of Furans with Aryl Halides |
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| Authors: | Murat Kalo?lu ?smail Özdemir |
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| Affiliation: | 1. Department of Chemistry, ?n?nü University, Faculty of Science and Arts, Malatya, Turkey;2. Catalysis Research and Application Center, ?n?nü University, Malatya, Turkey |
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| Abstract: | This paper contains the synthesis and characterization of the seven new benzimidazolium salts and their corresponding new palladium(II)‐NHC complexes with the general formula PdX2(NHC)2], (NHC = N‐heterocyclic carbene, X = Cl or Br), and also their catalytic activity in direct C‐H bond arylation of 2‐substituted furan derivatives with aryl bromides and aryl chlorides. Under the optimal conditions, these palladium(II)‐NHC complexes showed the good catalytic performance for the direct C‐H bond arylation of 2‐substituted furans with (hetero)aryl bromides, and with readily available and inexpensive aryl chlorides. The C‐H bond arylation regioselectively produced C5‐arylated furans by using 1 mol% of the palladium(II)‐NHC catalysts in moderate to high yields. |
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| Keywords: | benzimidazolium salt direct C‐H bond arylation furan N‐Heterocyclic carbene palladium |
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