triethylamine in toluene T=20 - 100°C; 4 h;

1: 95 percent / NEt3 / ((C6H5)3)2Pd(II)-chloride, CuI / 3 h / Ambient temperature 2: 67 percent / HgO, BF3/EtOEt, trifluoroacetic acid / methanol / 4 h / 60 °C View Scheme

triethylamine; copper(l) iodide; ((C6H5)3)2Pd(II)-chloride 3 h; Ambient temperature;