sodium hydride 1.) DMF, 1 h, 2.) RT, overnight; Yield given. Multistep reaction;

1: 80 percent / H2, triethylamine / Raney cobalt / dimethylformamide / 23 h / 124116 - 279260 Torr 2: 2 N NaOH / 6 h / Ambient temperature 3: H2O / from RT to 230 deg C, 40 min 4: 1.) NaH / 1.) DMF, 1 h, 2.) RT, overnight View Scheme

1: H2O / from RT to 230 deg C, 40 min 2: 1.) NaH / 1.) DMF, 1 h, 2.) RT, overnight View Scheme

1: 2 N NaOH / 6 h / Ambient temperature 2: H2O / from RT to 230 deg C, 40 min 3: 1.) NaH / 1.) DMF, 1 h, 2.) RT, overnight View Scheme

lithium aluminium tetrahydride in tetrahydrofuran 1.) RT, overnight, 2.) reflux, 1 h;