1: 74 percent / lithium aluminum hydride / diethyl ether / 5 h / Ambient temperature 2: 1) NaH / 1) dry DMSO, 30 min 2) 12h, room temperature View Scheme

sodium hydride 1) dry DMSO, 30 min 2) 12h, room temperature; Yield given. Multistep reaction;

acetic acid 16 h; Ambient temperature;