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Identify the compounds in the following.
C₆H₅NH₂ xrightarrow[A] C₆H₅N₂⁺Cl⁻ xrightarrow[Δ]KCN / CuCN [B] xrightarrowH₂O / H⁺ [C]
$\text{C}_6\text{H}_5\text{NH}_2 \xrightarrow{[\text{A}]} \text{C}_6\text{H}_5\text{N}_2^+\text{Cl}^- \xrightarrow[\Delta]{\text{KCN / CuCN}} [\text{B}] \xrightarrow{\text{H}_2\text{O} / \text{H}^+} [\text{C}]$
Answer
Answer
Equation: $\mathrm{C_{6}H_{5}NH_{2}} + \mathrm{NaNO_{2}} + 2\mathrm{HCl} \xrightarrow{\text{273-278}\text{ }\text{K}} \mathrm{C_{6}H_{5}N_{2}Cl} + \mathrm{NaCl} + 2\mathrm{H_{2}O}$
B - benzonitrile: C6H5CN
C - benzoic acid: C6H5COOH
[A] $\mathrm{NaNO_2}$ + HCl at 273-278 K (diazotisation); [B] benzonitrile (Sandmeyer/Gattermann type reaction); [C] benzoic acid.