Ответ:
1)C6H6+CH2=CH2 ==AlCl3==> C6H5-C2H5
2)C6H5-C2H5 + Cl2 ==hv==> C6H5-CH(Cl)-CH3 + HCl
3)C6H5-CHCl-CH3+KOH(спирт) ==> C6H5-CH=CH2+KCl+H2O
4)C6H5-CH=CH2 + 2KMnO4 + 3H2SO4 ==t==> C6H5-COOH + CO2 + 2MnSO4 + K2SO4 + 4H2O
5)C6H5-COOH+CH3OH ==H+,t==> C6H5-COO-CH3 + H2O