C3H8---C3H7CI---C6H14

СH3-CH2-CH3 + Cl2 -> CH3-CH2-CH2-Cl + HCl

CH3-CH2-CH2-Cl + 2Na + Cl-CH2-CH2-CH3 -> CH3-CH2-CH2-CH2-CH2-CH3 + 2NaCl