CH4 + Br2 ---свет---> CH3Br + HBr
CH3Br + 2Na + CH3Br ---> 2NaBr + C2H6
C2H6 --t,Ni---> C2H4 + H2
C2H4 ---t,Ni---> C2H2 + H2
3C2H2 ---Cakt,t----> C6H6
C + 2H2 ---> CH4
CH4 + Cl2 ---> CH3Cl + HCl
CH3Cl + 2Na + C2H5Cl ---> 2NaCl + C3H8
C3H8 + Br2 ---> C3H7Br + HBr