lithium aluminium tetrahydride in diethyl ether T=35°C;

1: concd. hydrochloric acid, calcium chloride / benzene / 1.) room temperature, 3 h, 2.) 55 deg C, 2 h, 3.) reflux, 5 h 2: 1.) LiAlH4, 2.) 5percent sodium hydroxide / 1.) diethyl ether, reflux, 6 h, 2.) ethyl acetate, room temperature, 10 h View Scheme