CH3-CHO -(KMnO4, NaOH)-> X1 -(electrolysis)-> C2H6 -(Cl2, hν)-> X2 -(KOH, H2O, T)-> X3 -(H2SO4, 140°C)-> X4
X4: Ethanol
CH3-CHO -(KMnO4, NaOH)-> X1 -(electrolysis)-> C2H6 -(Cl2, hν)-> X2 -(KOH, H2O, T)-> X3 -(H2SO4, 140°C)-> X4
X4: Ethanol