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Identify the compounds in the following.
Question
$\text{C}_2\text{H}_5\text{Cl} \xrightarrow{\text{alc. KCN}} [\text{A}] \xrightarrow{4[\text{H}]} [\text{B}] \xrightarrow[\text{heat}]{\text{CHCl}_3 + \text{alc. KOH}} [\text{C}]$
Answer
Answer
AIA - propanenitrile: CH3CH2CN
B - propan-1-amine: CH3CH2CH2NH2
C - 1-isocyanopropane (propyl isocyanide): CH3CH2CH2NC
A = propanenitrile ($\mathrm{C_2H_5CN}$)
B = propan-1-amine ($\mathrm{CH_3CH_2CH_2NH_2}$)
C = propyl isocyanide ($\mathrm{CH_3CH_2CH_2NC}$)
From ISC 2026 Improvement Chemistry Paper 1, question 16(ii).