In carbyl amine reaction,the electrophile is:

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(B) The carbylamine reaction involves the reaction of a primary amine with chloroform $(CHCl_3)$ in the presence of a strong base (like $KOH$).In this

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Carbene

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(B) The carbylamine reaction involves the reaction of a primary amine with chloroform $(CHCl_3)$ in the presence of a strong base (like $KOH$).In this reaction,chloroform reacts with the base to form dichlorocarbene $(:CCl_2)$.Dichlorocarbene is a neutral species with a sextet of electrons around the carbon atom,making it an electron-deficient species.Therefore,dichlorocarbene acts as the electrophile in the carbylamine reaction.

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