1.1: n-BuLi / tetrahydrofuran; pentane / 0.5 h / -78 °C 1.2: B(OMe)3 / tetrahydrofuran / -78 - 20 °C 2.1: 3.15 g / Pd(PPh3)4; aq. Na2CO3 / toluene; ethanol / 18 h / Heating View Scheme

tetrakis(triphenylphosphine) palladium(0); sodium carbonate in ethanol; toluene 18 h; Heating;