СH2=CH-CH=CH2 +2H2--->CH3CH2CH2CH3

CH3CH2CH2CH3--->CH3CH(CH3)CH3

CH3CH(CH3)CH3+Br2--->CH3C(CH3)CH3+HBr

                                                   Br

CH3C(CH3)CH3+KOH--->CH2=C(CH3)CH3 +KBr+H2O

       Br

5CH2=C(CH3)CH3 +4KMnO4+6H2SO4---> 2CH3C(O)CH3 +5HCOOH+2R2SO$+4MnSO4+6H2O