1: 1.) n-BuLi / 1.) hexane, THF, -78 deg C -> 4 deg C; 4 deg C, 2 h, 2.) 4 deg C, 1 h 2: 0.6 g / MeI / acetone; H2O / 24 h / Heating 3: 426 mg / tetrahydrofuran; diethyl ether / 1.) -5-0 deg C -> room temperature, 2.) room temperature, 1 h View Scheme