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(B) The reaction of primary amines with $CHCl_3$ and alcoholic $KOH$ is known as the carbylamine reaction. This reaction produces isocyanides (carbyla

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$p$-Aminobenzoic acid

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(B) The reaction of primary amines with $CHCl_3$ and alcoholic $KOH$ is known as the carbylamine reaction. This reaction produces isocyanides (carbylamines),which have a characteristic offensive smell. Both aliphatic and aromatic primary amines undergo this reaction. However,in the case of $p$-aminobenzoic acid,the presence of the acidic $-COOH$ group and the basic $-NH_2$ group in the same molecule leads to the formation of a zwitterion. Due to the formation of this zwitterion,the $-NH_2$ group is not available to react with $CHCl_3 / KOH$ under normal conditions,and thus it does not produce the offensive smell of a carbylamine.

Which of the following compounds will not produce an offensive smell when treated with $CHCl_3 / KOH$?

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