Question

Write the chemical equation for obtaining phenol from cumene. What is the reaction of phenol with the following? (Write only chemical equations.)

(i) Benzene from benzoic acid:

(ii) Phthalimide from phthalic acid:

(iii) \( m \)-Nitrobenzaldehyde from benzaldehyde:

(iv) Benzaldehyde from benzene:

(v) Silver mirror from \( C_6H_5CHO \):

Hint:

Heating phenol with zinc powder reduces it to benzene.

Answer 1

(i) Benzene from benzoic acid:\[ C_6H_5COOH + NaOH \xrightarrow{\Delta} C_6H_6 + Na_2CO_3 \]

(ii) Phthalimide from phthalic acid:\[ C_6H_4(COOH)_2 \xrightarrow{NH_3, \Delta} C_6H_4(CO)NH \]

(iii) \( m \)-Nitrobenzaldehyde from benzaldehyde:\[ C_6H_5CHO + HNO_3 \xrightarrow{Conc. H_2SO_4} C_6H_4(NO_2)CHO \]

(iv) Benzaldehyde from benzene:\[ C_6H_6 + CO + HCl \xrightarrow{AlCl_3} C_6H_5CHO \]

(v) Silver mirror from \( C_6H_5CHO \):

\[ C_6H_5CHO + 2[Ag(NH_3)_2]^+ + 3OH^- \rightarrow C_6H_5COOH + 2Ag + 4NH_3 + H_2O \]