phosphorus pentachloride in chloroform 30 h; Heating;

1: H2 / 10percent Pd/C / ethyl acetate / 6 h 2: 81 percent / benzene; methanol / 50 - 60 °C 3: 100 percent / polyphosphoric acid / 0.25 h / 110 °C 4: 92 percent / PCl5 / CHCl3; various solvent(s) / 30 h / Heating View Scheme

1: 81 percent / benzene; methanol / 50 - 60 °C 2: 100 percent / polyphosphoric acid / 0.25 h / 110 °C 3: 92 percent / PCl5 / CHCl3; various solvent(s) / 30 h / Heating View Scheme

1: 100 percent / polyphosphoric acid / 0.25 h / 110 °C 2: 92 percent / PCl5 / CHCl3; various solvent(s) / 30 h / Heating View Scheme