phosphorus trichoride in diethyl ether; hexane T=-78 - 20°C;

hydrogenchloride in diethyl ether T=-20°C; 0.0833333 h;

1: With n-butyllithium in tetrahydrofuran; hexane T=-78 - 0°C; 2.5 h; Inert atmosphere; 2: With phosphorus trichoride in tetrahydrofuran; diethyl ether; hexane T=-78 - 20°C; Inert atmosphere;