1: 88 percent / K2CO3 / methanol / 1.25 h 2: 87 percent / Cs2CO3, C6H5SH / dimethylformamide / 4.25 h / 90 °C 3: 58 percent / PdCl2dppp, LiBHEt3 / tetrahydrofuran / 1 h / 0 °C View Scheme