Write the structures of compounds A, B and C ...

CBSE Class 12 Chemistry 2017 Outside Delhi Set 1 Solved Paper

Question : 18 of 26

Marks: +1, -0

Write the structures of compounds A, B and C in the following reactions :

(a)

\mathrm{CH}_3-\mathrm{COOH} \xrightarrow{\mathrm{NH}\rightarrow_3 / \Delta} A \xrightarrow{\mathrm{Br}\rightarrow_2 / \mathrm{KOH}(\mathrm{aq})}{}

\;\text{B}\;\xrightarrow{\mathrm{CHCl}\rightarrow_3 + \;\text{ alc. }\; \mathrm{KOH}} C

(b)

\;\mathrm{C}_6\mathrm{H}_5\mathrm{N}_2^+ \mathrm{BF}_4^- \xrightarrow[\Delta]{\mathrm{NaNO}_2 / \mathrm{Cu}} A \xrightarrow{\mathrm{Fe}\rightarrow / \mathrm{HCl}}{}

\;\mathrm{B} \xrightarrow{\mathrm{CH}\rightarrow_3 \mathrm{COCl} / \;\text{pyridine}\;} C

Solution:

(a)

(b)

\;\mathrm{C}_6\mathrm{H}_5\mathrm{N}_2^+ \mathrm{BF}_4^- \xrightarrow[\Delta]{\mathrm{NaNO}_2 / \mathrm{Cu}} \underset{\text{Nitrobenzene (A)}}{\mathrm{C_6H_5NO_2}} \xrightarrow{\mathrm{Fe}\rightarrow / \mathrm{HCl}}{}

\;\underset{\text{Aniline}}{\mathrm{C_6H_5NH_2}} \xrightarrow{\mathrm{CH}\rightarrow_3 \mathrm{COCl} / \;\text{pyridine}\;} \underset{\text{N-phenyl ethanamide}}{\mathrm{C_6H_5NHCOCH_3}}

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