Scheme 1. Aromatic Dimerization Reactions Were Performed under Ambient Conditionsa.
a1 mol % Pd(OAc)2, 3 mol % Cu(OAc)2, 5% (v/v) H2O/DMSO, rt, and air. Reactions (1.7 mL) were run at 0.18 M. Water can be added to anhydrous or benchtop DMSO without affecting yields. * NMR yields.