Например так:
1) C6H6 + H3C-CH=CH2 (+AlCl3) = C6H5-CH(CH3)2;
2) C6H5-CH(CH3)2 + H3C-CH=CH2 (+AlCl3) = (H3C)2CH-C6H4-CH(CH3)2;
3) (H3C)2CH-C6H4-CH(CH3)2 + 2O2 =
(H3C)2C(-O-O-H)-C6H4-C(-O-O-H)(CH3)2;
4) (H3C)2C(-O-O-H)-C6H4-C(-O-O-H)(CH3)2 (+H2SO4) =
HO-C6H4-OH (гидрохинон) + 2H3C-C(O)-CH3.