[tex]\boxed{\tt CaCO_3 \to CaO \to CaC_2 \to C_2H_2 \to C_2H_4 \to C_2H_5OH \to CH_3COOH \to CH_2(Cl)COOH \to CH_2(NH_2)COOH }[/tex]
[tex]\tt 1) ~CaCO_3 \xrightarrow{t^{\circ}C} CaO + CO_2\uparrow.[/tex]
[tex]\tt 2)~CaO + 3C \xrightarrow{t^{\circ}C} CaC_2 + CO\uparrow.[/tex]
[tex]\tt 3)~CaC_2 + 2H_2O \to C_2H_2 + Ca(OH)_2.[/tex]
[tex]\tt 4)~ C_2H_2 + H_2 \xrightarrow{Pt,~t^{\circ}C} C_2H_4.[/tex]
[tex]\tt 5)~ H_2C=CH_2 + H_2O \to C_2H_5OH.[/tex]
[tex]\tt 6)~5C_2H_5OH + 4KMnO_4 + 6H_2SO_4 \xrightarrow{t^{\circ}C} 5CH_3COOH + 4MnSO_4 + 2K_2SO_4 + 11H_2O.[/tex]
[tex]\tt 7)~CH_3COOH + Cl_2 \xrightarrow{P} CH_2(Cl)COOH + HCl.[/tex]
[tex]\tt 8) ~ CH_2(Cl)COOH + 2NH_3 \to CH_2(NH_2)COOH + NH_4Cl.[/tex]