1: caesium carbonate; copper(I) thiophene-2-carboxylate; N,N,N',N,-tetramethylethylenediamine / water / 0.17 h / 300 °C / 12929 Torr / |Microwave irradiation 2: boron tribromide / dichloromethane / 0 °C / |Inert atmosphere View Scheme

copper(I) thiophene-2-carboxylate; N,N,N',N,-tetramethylethylenediamine; caesium carbonate in water T=300°C; P=12929 Torr; 0.166667 h; Microwave irradiation;