1) CH3-CH(CH3)-Ch3+Br2---------Ch3-CBr(Ch3)-Ch3+HBr
Ch3-CBr(Ch3)-Ch3+KOH(спирт)-----Ch3-C(CH3)=Ch3+ KBr+H2O
Ch3-C(CH3)=Ch3+HBr------------ Ch3-CBr(CH3)-Ch3
2) Ch3-C(Ch3)(OH)-Ch2-Ch3-----(температура больше 140 градусов,H2SO4)-----Ch3-C(Ch3)=Ch-Ch3+H2O
Ch3-C(Ch3)=Ch-Ch3+HI------Ch3-CI(Ch3)-Ch2-Ch3
3) мягкое окисление пропена
СH2=Ch-Ch3+2KMNO4+2KOH-----Ch2(OH)-Ch(OH)-Ch3+2K2MnO4
жесткое окисление
3СH2=Ch-Ch3+10KMnO4+2H2O(при нагревании)-----3Ch3COOH+3CO2+10KOH+10MnO2