n-butyllithium; diisopropylamine in tetrahydrofuran; water

1: COCl2, DMF / CH2Cl2 / Ambient temperature 2: CH2Cl2 / Ambient temperature 3: SOCl2 / CHCl3 / Ambient temperature 4: 1) lithium diisopropylamide, 2) hexachloroacetone / 1) THF, -78 deg C, 2) up to room temp. View Scheme

1: CH2Cl2 / Ambient temperature 2: SOCl2 / CHCl3 / Ambient temperature 3: 1) lithium diisopropylamide, 2) hexachloroacetone / 1) THF, -78 deg C, 2) up to room temp. View Scheme

1,1,1,3,3,3-hexachloro-propan-2-one; lithium diisopropyl amide 1) THF, -78 deg C, 2) up to room temp.; Yield given. Multistep reaction;