Write the reaction equations: СН4 – С2Н2 – СН3СОН – СН3СООН – СН2 (-Cl) – COOH – CH2 (-NH2) – COOH

Let’s implement the solution, compose a chain of transformations for organic substances:
1.CH4 – C2H2 – CH3COH – CH3COOH – CH2 (-Cl) – COOH – CH2 (-NH2) – COOH;
2. 2CH4 = C2H2 + 3H2 – methane decomposition reaction, acetylene is released;
3. С2Н2 + Н2О = Н2С = СНОН = Н3С – СНО – Kucherov’s reaction, acetic aldehyde was obtained, vinyl alcohol is an intermediate substance;
4. Н3С – СНО + 2Cu (OH) 2 = CH3COOH + Cu2O + H2O – oxidation of aldehyde by copper hydroxide, acetic acid was released;
5. CH3COOH + Cl2 = CH2Cl – COOH + HCl – substitutions, chloroacetic acid was obtained;
6. СН2Cl + NH3 = CH2 – (NH2) – COOH + HCl – exchange, aminoacetic acid was formed.