1) C2H5Cl -> C2H5OH -> CH3CHO -> CH3COOH -> CH3COOC2H5
C2H5Cl + k.NaOH = NaCl + C2H5OH
C2H5OH + 1/2O2 = CH3CHO + H2O
CH3CHO + 2Cu(OH)2 = Cu2O + 2H2O + CH3COOH
CH3COOH + C2H5OH = CH3COOC2H5 + H2O
2) CH3CH2CH2Cl -> CH3CH2CH2OH -> CH3CH2CHO -> C2H5COOH -> CH3-CH(Cl)-COOH
CH3CH2CH2Cl + k.NaOH = NaCl + CH3CH2CH2OH
CH3CH2CH2OH + 1/2O2 = CH3CH2CHO + H2O
CH3CH2CHO + 2Cu(OH)2 = Cu2O + 2H2O + C2H5COOH
CH3CH2COOH + Cl2 = CH3CH(Cl)COOH + HCl

3) CH3-CH2-OH -> CH3-CHO -> CH3COOH -> Cl-CH2-COOH -> H2N-CH2-COOH -> H2N-CH2-CO-NH-CH2-COOH
C2H5OH + 1/2O2 = CH3CHO + H2O
CH3CHO + 2Cu(OH)2 = Cu2O + 2H2O + CH3COOH
CH3COOH + Cl2 = ClCH2COOH + HCl
ClCH2COOH + 2NH3 = NH4Cl + NH2CH2COOH
2NH2CH2COOH = H2N-CH2-CO-NH-CH2-COOH + H2O