1: 1.) NaH / THF, 1.) reflux, 30 min, 2.) reflux, 3 h 2: 86 percent / Zn / acetic acid / 16 h / Heating View Scheme

n-butyllithium; potassium tert-butylate 1.) THF-hexane, -78 deg C, 1 h, 2.) -78 deg C -> RT, 1 h; RT, 2 h, 3.) 1 h; Yield given. Multistep reaction;