CH2=CH-CH3+Cl2-----光照------CH2=CH-CH2-ClCH2=CH-CH2-Cl+NaCN----------CH2=CH-CH2-CN+NaClCH2=CH-CH2-CN+2H2O--------CH2=CH-CH2-COOH+NH3CH2=CH-CH2-COOH+H2-------CH3-CH2-CH2-COOH+
