1)2CH3I+2Na->(t)2NaI+C2H6
C2H6+Cl2->(свет)C2H5Cl+HCl
2C2H5Cl+2Na-(t)2NaCl+C4H10
2)C4H10+Br2->(свет)C4H9Br+HBr
3)C4H9Br+KOH(спирт)->(t)C4H8+KBr+H2O
C4H8+H2->(t,Ni)C4H10
C4H10->(t,охлаждение)C2H4+C2H6
C2H6+Cl2->(свет)C2H5Cl+HCl
C2H5Cl+CH3-Mg-Cl->(t,эфир)MgCl2+C3H8
4)C3H8->(Ni,t)C3H6+H2
5)nCH2=CH-CH3->(t,p)[-CH2-CH2(CH3)-]n