Пропан->пропанол-2->пропен->2-бромпропан->пропен->1,2-дибромпропан составить…

1) CH3-CH2-CH3+Cl2-> (свет) CH3-CH (Cl) -CH3+HClCH3-CH (Cl) -CH3+NaOH (p-p) -> (t) CH3-CH (OH) -CH3+NaCl2) CH3-CH (OH) -CH3-> (H2SO4 конц.,t>140) CH2=CH-CH3+H2O3) CH2=CH-CH3+HBr (p-p) ->CH3-CH (Br) -CH34) CH3-CH (Br) -CH3+KOH (спирт) -> (t) CH2=CH-CH3+KBr+H2O5) CH2=CH-CH3+Br (p-p) ->CH2 (Br) -CH (Br) -CH3