hydrogenchloride; n-butyllithium 1) THF, hexane, -78 degC; 2) THF, 20 degC; Yield given. Multistep reaction. Yields of byproduct given;

hydrogenchloride; n-butyllithium 1.) THF, hexane, -78 deg C, 2.) THF, 0 deg C, 10 min; Yield given. Multistep reaction;