lithium aluminium tetrahydride in diethyl ether 1.) 35 min, reflux, 2.) room temp., overnight;

1: 96 percent / LiAlH4 / diethyl ether / 1.) 35 min, reflux, 2.) room temp., overnight 2: 71 percent / SOCl2 / benzene / 15 h / Ambient temperature View Scheme