Сh4-> ch3ci-> ch3-ch3-> ch2=ch2-> ch3-ch2ci-> c4h10

1.       CH4+ Cl2= CH3Cl+ HCl ( катализатор hn, t)

2.       2СН3СI+ 2Na= CH3-CH3+ 2NaCL

3.       CH3-CH3= CH2=CH2 + H2 ( катализатор Cr2O3, t)

4.       CH2=CH2 + HCl= CH3-CH2Cl

5.       2CH3-CH2Cl + 2Na= C4H10 + 2NaCl