Identify ' B ' in the following conversion. $\mathrm{CH}_3-\mathrm{I} \xrightarrow{\mathrm{KCN}} \mathrm{~A}…

Identify ' B ' in the following conversion. $\mathrm{CH}_3-\mathrm{I} \xrightarrow{\mathrm{KCN}} \mathrm{~A} \xrightarrow{\mathrm{Na} / \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}} \mathrm{O}$
  1. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CN}$
  2. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_3$
  3. $\mathrm{CH}_3-\mathrm{NH}-\mathrm{C}_2 \mathrm{H}_5$
  4. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NH}_2$

Solution

$\underset{\begin{array}{c} \text { Methyl } \\ \text { iodide } \end{array}}{\mathrm{CH}_3-\mathrm{I}}+\underset{\text { (alc.) }}{\mathrm{KCN}} \longrightarrow \underset{\begin{array}{c} \text { Methyl } \\ \text { cyanide } \end{array}}{\mathrm{CH}_3-\mathrm{CN}}+\mathrm{KI}$ (A) $\mathrm{CH}_3-\mathrm{CN}+4[\mathrm{H}] \xrightarrow{\mathrm{Na} / \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}} \underset{\text { Ethylamine (B) }}{\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NH}_2}$

Asked in: MHT CET 2024 (04 May Shift 2)

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