2CH4 $\buildrel{{1500^oC, \text{làm lạnh nhanh}}}\over\longrightarrow$ C2H2+ 3H2
C2H2+ H2 $\buildrel{{t^o, Pd}}\over\longrightarrow$ C2H4
n CH2=CH2 $\buildrel{{p, t^o, xt}}\over\longrightarrow$ (CH2-CH2)n
C2H2+ HCl $\buildrel{{t^o, xt}}\over\longrightarrow $ CH2=CHCl
n CH2=CHCl $\buildrel{{t^o, p, xt}}\over\longrightarrow$ (CH2-CHCl)n
2C2H2 $\buildrel{{CuCl2, t^o}}\over\longrightarrow$ C4H4
C4H4+ H2 $\buildrel{{Pb, t^o}}\over\longrightarrow$ C4H6
nC4H6 $\buildrel{{t^o, p, xt}}\over\longrightarrow$ (CH2-CH=CH-CH2)n