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Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

ChemistryCarboxylic acid and their DerivativesREACTIONS OF ACYL CHLORIDESMedium2 minQB
ChemistryMediumsingle choice

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Question diagram:

Options:

Answer:
C
Solution:

Starting compound is o-aminobenzoyl chloride (–COCl + –NH₂ on ring).

NaN₃ reacts with acyl chloride → forms acyl azide.

On heating (Δ), it undergoes Curtius rearrangement → isocyanate forms.

Intramolecular reaction with –NH₂ group → cyclic product (lactam type).

Final stable product is benzimidazolone structure.

Stream:JEESubject:ChemistryTopic:Carboxylic acid and their DerivativesSubtopic:REACTIONS OF ACYL CHLORIDES
2mℹ️ Source: QB

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