acetic anhydride T=100°C; 0.166667 h;

1: H2O / from RT to 230 deg C, 40 min 2: 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 3: lithium aluminum hydride / tetrahydrofuran / 1.) RT, overnight, 2.) reflux, 1 h View Scheme