CH3-CH3->CH3-CH2CL->CH2=CH2->CH3-CH2-OH
CH4+Cl2=CH3Cl+HCl CH3Cl+2Na+CH3Cl=CH3-CH3+2NaCl С2Н6+Cl2-> C2H5Cl+HCl C2H5Cl+NaOH->C2H5OH+NaCl C2H5OH (H+. Hg. t>140)=C2H4+H2O C2H4+H2=CH3-CH3