1) С2Н5ОН =(400-500 С, Al2O3, ZnO) = <span>CH2=CH-CH=CH2+2H2O+H2 ( по реакции Лебедева) (получили X)</span>
<span>2)CH2=CH-CH=CH2 <span>+2H2 =( Pt )= <span>CH3-CH2-CH2-CH3 (получили X)</span></span></span>
<span>3) C4H10 + Br2 =( t, УФ)= C4H9Br + HBr</span>
4) <span>С4H9Br + KOH (спирт) = KBr + H2O + CH3-CH=CH-CH3 (получили Y)</span>
<span>5)<span>3CH3-CH=CH-CH3 + 2KMnO4 + 4H2O = 2MnO2 + 2KOH + 3CH3-CH(OH)-CH(OH)-CH3</span></span>