triethylamine in chloroform 0.333333 h; ice cooling;

trichlorophosphate T=100 - 110°C; 0.5 h;

1: 80.7 percent / POCl3 / 0.5 h / 100 - 110 °C 2: 71.5 percent / LiAlH4 / tetrahydrofuran; diethyl ether / 1 h / ice cooling View Scheme

1: 80.7 percent / POCl3 / 0.5 h / 100 - 110 °C 2: 71.5 percent / LiAlH4 / tetrahydrofuran; diethyl ether / 1 h / ice cooling 3: 90.7 percent / SOCl2 / 0.5 h / Ambient temperature View Scheme