Пропен-(HBr)->x1-(KOH(H2O)->x2->c3h6-(Ni,t)->x3-(H2O,Hg)->x4 Оооочень СРОЧНО!
CH2=CH-CH3+HBr=CH3-CHBr-CH3 CH3-CHBr-CH3+KOH=KBr+CH3-CHOH-CH3 CH3-CHOH-CH3=H2O+C3H6 C3H6=C3H4+H2 C3H4+H2O=CH3-CO-CH3