copper(l) iodide; diethylamine; tetrakis(triphenylphosphine) palladium(0) in diethyl ether T=35°C; 2 h;

pyridine; copper(I) oxide; methanol in chloroform T=25°C; P=760.051 Torr; 36 h;

1: tetrahydrofuran / 1 h / 75 °C 2: bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine / tetrahydrofuran / 20 °C / |Inert atmosphere View Scheme

hydrogenchloride in tetrahydrofuran; 1,4-dioxane T=20°C;