Напишите уравнения реакций CH3COH → X1 → бутадиен-1,3 → X3→ X1→Х4

1) CH3-COH +H2 → CH3-CH2-OH
2) 2 CH3-CH2-OH → CH2 =CH- CH = CH2+2H2O+H2
3) CH2 =CH- CH = CH2 +H2 → CH3 - CH= CH -CH3
4) 3CH3–CH=CH–CH3 + 2KMnO4 +4H2O →3 CH3–CHOH–CHOH–CH3 + 2MnO2 + 2KOH
5) CH3–CHOH–CHOH–CH3 + 2CH3COOH→CH3–CH–CH–CH3 +2H2O