1)CH3-CH2-CHO+2Cu(OH)2--->CH3-CH2-COOH+2CuOH+H2O
2)CH3-CH2-COOH+Cl2--->CH3-CH(Cl)-COOH+HCl
3)CH3-CH(Cl)-COOH+2NH3--->CH3-CH(NH2)-COOH+NH4Cl
4)2CH3-CH(NH2)-COOH+K2CO3--->2CH3-CH(NH2)-COOK+H2O+CO2
1)CH3-CH2-CHO+2Cu(OH)2--->CH3-CH2-COOH+2CuOH+H2O
2)CH3-CH2-COOH+Cl2--->CH3-CH(Cl)-COOH+HCl
3)CH3-CH(Cl)-COOH+2NH3--->CH3-CH(NH2)-COOH+NH4Cl
4)2CH3-CH(NH2)-COOH+K2CO3--->2CH3-CH(NH2)-COOK+H2O+CO2