p-Methylbenzonitrile can be prepared from whi | vedclass

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Question

(C) The preparation of $p-$methylbenzonitrile ($p-$tolunitrile) is best achieved via the Sandmeyer reaction starting from $p-$toluidine.$1$. $p-$Tolui

Vedclass · Accepted Answer

$p-$Toluidine reacting with $(i) NaNO_2/HCl, 273-278 \ K$ and $(ii) CuCN/KCN$.

Vedclass · Answer

(C) The preparation of $p-$methylbenzonitrile ($p-$tolunitrile) is best achieved via the Sandmeyer reaction starting from $p-$toluidine.$1$. $p-$Toluidine reacts with $NaNO_2/HCl$ at $273-278 \ K$ to form the $p-$methylbenzenediazonium chloride salt.$2$. This diazonium salt then reacts with $CuCN/KCN$ to yield $p-$methylbenzonitrile.- Option $(a)$ and $(b)$: Aryl halides like $4-$chlorotoluene do not undergo nucleophilic substitution with $NaCN$ or $AgCN$ under standard conditions due to the partial double bond character of the $C-Cl$ bond.- Option $(d)$: This is the carbylamine reaction,which converts primary amines into isocyanides $(R-NC)$,not nitriles $(R-CN)$.

$p-$Methylbenzonitrile can be prepared from which of the following?

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