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  • Title: Palladium-catalyzed direct C-2 arylation of indoles with potassium aryltrifluoroborate salts.
    Author: Zhao J, Zhang Y, Cheng K.
    Journal: J Org Chem; 2008 Sep 19; 73(18):7428-31. PubMed ID: 18702549.
    Abstract:
    Mild conditions have been developed to achieve Pd(OAc)2-catalyzed regioselective cross-coupling between indoles and potassium aryltrifluoroarylborates in the presence of Cu(OAc)2 in acetic acid at room temperature. A variety of potassium aryltrifluoroborates selectively undergo the direct arylation across indoles and afford 2-aryl indoles in moderate to good yields.
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