pyridine in benzene 2 h; Ambient temperature;

sodium hydride 1) DMF, r.t., 1 h, 2) r.t., 2 h; Yield given. Multistep reaction;

1: 1) NaH / 1) DMF, r.t., 1 h, 2) r.t., 2 h 2: 52 percent / H2 / Raney nickel / tetrahydrofuran / 5 h / 40 °C / 3800 Torr 3: 15percentaq.H2SO4 / 8 h / Heating 4: 40percentaq.KOH / ethanol / 1 h / Heating View Scheme