1: 1.) n-BuLi / 1.) diethyl ether, hexane, 4 h, room temp., 2.) 12 h, reflux 2: 2.) NaHCO3 / 1.) diethyl ether, 2.) H2O, ether, room temp. View Scheme

sodium hydrogencarbonate 1.) diethyl ether, 2.) H2O, ether, room temp.; Yield given. Multistep reaction. Yields of byproduct given;