$2CH_4\buildrel{{1500^oC}}\over\to C_2H_2+ 3H_2$
$C_2H_2+ 2H_2\buildrel{{Ni, t^o}}\over\to C_2H_6$
$C_2H_6+ Cl_2\buildrel{{as}}\over\to C_2H_5Cl+ HCl$
$C_6H_6+ C_2H_5Cl \buildrel{{t^o, xt}}\over\to C_6H_5-C_2H_5+ HCl$
$C_6H_5-C_2H_5\buildrel{{xt, t^o}}\over\to C_6H_5-CH=CH_2+ H_2$ (Điều chế stiren)
$2C_2H_2 \buildrel{{xt, t^o}}\over\to CH\equiv C-CH=CH_2$
$CH\equiv C-CH=CH_2+ H_2\buildrel{{Pd/PbCO_3, t^o}}\over\to CH_2=CH-CH=CH_2$ (Điều chế buta-1,3-đien)
* Điều chế cao su Buna-S:
$nCH_2=CH-CH=CH_2+ nC_6H_5-CH=CH_2 \buildrel{{t^o, p, xt}}\over\to (-CH_2-CH=CH-CH_2-CH(C_6H_5)-CH_2-)_n$
