2CH4 ----- CH≡CH + 3H2
CH≡CH + H2O --(Hg²⁺)--- CH3-COH
CH3-COH + 2[Ag(NH3)2]OH --(t)-- CH3-COOH + 2Ag + 4NH3 + H2O
CH3-COOH + C2H5OH ---(t,H2SO4)-- CH3-CO-O-C2H5 + H2O
CH3-CO-O-C2H5 + KOH ---- C2H5OH + CH3-COOK
C2H5OH ---(t,H2SO4)-- CH2=CH2 + H2O
nCH2=CH2 ----- (-CH2-CH2-)n