The reaction of p-toluidine with chloroform a | vedclass

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(B) The reaction of a primary amine $(R-NH_2)$ with chloroform $(CHCl_3)$ and alcoholic potassium hydroxide $(KOH)$ is known as the carbylamine reacti

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$p$-tolyl isocyanide

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(B) The reaction of a primary amine $(R-NH_2)$ with chloroform $(CHCl_3)$ and alcoholic potassium hydroxide $(KOH)$ is known as the carbylamine reaction or isocyanide test. In this reaction,the amine is converted into an isocyanide $(R-NC)$. For $p$-toluidine $(CH_3-C_6H_4-NH_2)$,the reaction proceeds as follows: $CH_3-C_6H_4-NH_2 + CHCl_3 + 3KOH \rightarrow CH_3-C_6H_4-NC + 3KCl + 3H_2O$. The product formed is $p$-tolyl isocyanide.

The reaction of $p$-toluidine with chloroform and alcoholic $KOH$ forms:

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