HC≡CH + 2H₂ ---> CH₃-CH₃ (Kt-Ni,t)
CH₃-CH₃ + Cl₂ --> CH₃-CH₂-Cl + HCl (hv)
2CH₃-CH₂-Cl + 2Na --> CH₃-CH₂-CH₂-CH₃ + 2NaCl
CH₃-CH₂-CH₂-CH₃ --> CH₂=CH-CH₂-CH₃ + H₂ (Kt-Pt,t)
CH₂=CH-CH₂-CH₃ + H₂O --> CH₃-CH(OH)-CH₂-CH₃
вещество Х - CH₃-CH(OH)-CH₂-CH₃ (бутанол-2)