Yield given. Multistep reaction;

1: POCl3, Et3N / CHCl3 / 0.5 h / Ambient temperature 2: 1.) pyridine, 2.) water / 1.) CHCl3, RT, 16 h, 2.) 30 min 3: 100 percent / H2 / 20percent Pd(OH)2/C / methanol; H2O / 24 h 4: 98 percent / 4-(dimethylamino)pyridine / CHCl3 / 24 h View Scheme

1: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme