We recently communicated a combined computational and experimental
study of our discovery of selectivity reversal in Pd cross-coupling
in polar solvent for a competition reaction of C-Cl vs.
C-OTf functionalization. Our data suggested that the reactivity in
polar solvent is consistent with anionic Pd(0) and in nonpolar solvent
with neutral Pd(0) catalysis. This article will discuss the power and
limits of current computational approaches to explore mechanisms
in the context of this study and will highlight the use of experiments
in parallel to computational approaches to test theoretical conclusions
and aid theoretical analyses.
DFT - cross-coupling - anionic palladium - Suzuki coupling - solvent