H2C=CH-CH3+HCl=H3C-CHCl-CH3

H3C-CHCl-CH3+2Na+Cl-CH3=H3C-CH(CH3)-CH3+2NaCl

H3C-CH(CH3)-CH3+Cl2=H3C-CCl(CH3)-CH3+HCl

H3C-CCl(CH3)-CH3+2Na+Cl-CH3=H3C-C(CH3)2-CH3+2NaCl.