1: aqueous HI; red phosphorus; KI / 180 °C 2: H2SO4 View Scheme

phosphorus; hydrogen iodide; potassium iodide T=180°C;

1: With bis-triphenylphosphine-palladium(II) chloride; tetraethylammonium chloride in N,N-dimethyl-formamide T=100°C; 3 h; Inert atmosphere; 2: With hydrogenchloride in methanol; N,N-dimethyl-formamide T=20°C; 1 h; Inert atmosphere;