CH3COH(Над стрелочкой [O] )--->X1(Над стрелочкой +Cl2)--->X2(Над стрелочкой +NH3)--->X3(Над стрелочкой +HCL)--->X4
CH3COH->([O]) CH3COOH
CH3COOH+Cl2->CH2ClCOOH+HCl
CH2ClCOOH+NH3->NH2CH2COOH+HCl
NH2CH2COOH+HCl->(NH3CH2COOH)Cl