Al4C3-CH4-CH3Cl-CH3OH-CH2O
Al4C3 + 12H2O = 4Al(OH)3 + 3CH4 CH4 + Cl2 ---свет---> CH3Cl + HCl CH3Cl + KOH(водн.) = CH3OH + KCl CH3OH + CuO = CH2O + Cu + H2O