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(A) Study of the transmetalation step: influence of the molecular sieves and the base. (B) Stoichiometric sequence of oxidative addition–reductive elimination. (C) Theoretical analysis of the C–O bond forming step. aYields determined by 1H NMR using 1,3,5-trimethoxybenzene as internal standard. bYields determined by 19F NMR using 1-fluoro-4-nitrobenzen as internal standard.
