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  • Title: Biphenylene-substituted ruthenocenylphosphine for Suzuki-Miyaura coupling of aryl chlorides.
    Author: Hoshi T, Nakazawa T, Saitoh I, Mori A, Suzuki T, Sakai J, Hagiwara H.
    Journal: Org Lett; 2008 May 15; 10(10):2063-6. PubMed ID: 18422322.
    Abstract:
    High activity in the palladium-catalyzed Suzuki-Miyaura reactions of aryl chlorides with arylboronic acids was furnished using biphenylene-substituted di- tert-butylruthenocenylphosphine (R-Phos) as a supporting ligand. Substrate combinations even for the construction of highly hindered tetra- ortho-substituted biaryls can be achieved in good to excellent yields with low catalyst loadings in short reaction times.
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