1: palladium diacetate; 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl; sodium t-butanolate / toluene / 24 h / 80 °C / Inert atmosphere 2: Ni(PCy3)2Cl2; K3PO4; 1,1,3,3-tetramethyldisiloxane / toluene / 15 h / 115 °C / Inert atmosphere View Scheme

zirconocene dichloride in tetrahydrofuran T=20°C; Inert atmosphere;