Na br; ультрф. св. koh(спирт. раств.) > > > > > ch3-ch-ch-ch3 | | oh oh

С2H6+Br2 -> C2H5Br+HBr
2C2H5Br+2Na->C4H10+2NaBr
CH3-CH2-CH2-CH3 + Cl2 -> CH3-CHCl-CH2-CH3+HCl(X2)
CH3-CHCl-CH2-CH3+Cl2->CH3-CHCl-CHCl-CH3+HCl(X3)
CH3-CHCl-CHCl-CH3+2KOH-> CH3-CHOH-CHOH-CH3+2KCl