sodium t-butanolate; 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl; bis(dibenzylideneacetone)-palladium(0) in toluene T=20°C; 2 h; Heating / reflux; Product distribution / selectivity;

bis-triphenylphosphine-palladium(II) chloride; pivalic acid potassium salt in N,N-dimethyl acetamide T=140°C; 12 h;