M. Morenomanas et al., PALLADIUM-CATALYZED SUZUKI-TYPE SELF-COUPLING OF ARYLBORONIC ACIDS - A MECHANISTIC STUDY, Journal of organic chemistry, 61(7), 1996, pp. 2346-2351
Symmetrical biaryls are formed from arylboronic acids both under tetra
kis(triphenylphosphine)palladium and under palladium(II) acetate catal
ysis. The principal mechanistic features of these self-couplings have
been determined.