CH3---CH3 + Cl2 = CH3---CH3Cl + HCl
2CH3---CH3Cl + 2Na = CH3---CH2---CH2---CH3 + 2NaCl
CH3---CH2---CH2---CH3 + Br2 = CH3---CHBr---CH2---CH3 + HBr
CH3---CHBr---CH2---CH3 + NaOH(cпирт.) = CH3---CH=CH---CH3 + H2O + NaBr
CH3---CH2---CH=CH2 + HCl = CH3---CH2---CHCl---CH3
CH3---CH2---CHCl---CH3 + KOH(спирт.) = CH3---CH2---CH=CH2 + KCl + H2O
3CH3---CH2---CH=CH2 + 2KMnO4 + 4H2O = 3CH3---CH2---CHOH---CH2OH + 2KOH + 2MnO2
2| | Mn⁺⁷ +3e- ---> Mn⁺⁴
|6 |C⁺ +1e- --> C⁰
3| |C⁺² +1e- --> C⁺¹