Abstract
Suzuki coupling of the bifunctional substrate 1 using [Pd(2)(dba)(3)]/PtBu(3) gives selectivity for C-Cl in nonpolar solvents but for C-OTf in polar solvents. The results of computational and experimental studies suggest that the catalytically active species in polar solvents under conditions employing coordinating additives is inconsistent with monoligated [Pd(PtBu(3))]. Instead, the data are consistent with an anionic palladium complex as the active species.
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