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Karnataka Board PUCPUC Science 2nd PUC Class 12

A solution contains 1 g mol. each of p-toluene diazonium chloride and p-nitrophenyl diazonium chloride. To this 1 g mol. of alkaline solution of phenol is added. Predict the major product. Explain - Chemistry

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Question

A solution contains 1 g mol. each of p-toluene diazonium chloride and p-nitrophenyl diazonium chloride. To this 1 g mol. of alkaline solution of phenol is added. Predict the major product. Explain your answer.

Short/Brief Note
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Solution

This reaction is an example of electrophilic aromatic substitution. In alkaline medium, phenol forms phenoxide ion which is more electron-rich than phenol and hence more reactive for electrophilic attack. The electrophile in this reaction is aryl diazonium cation. p-Nitrophenyldiazonium cation is a stronger electrophile than p-toluene diazonium cation. Therefore, it couples preferentially with phenol.

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Chapter 13: Amines - Multiple Choice Questions (Type - I) [Page 190]

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NCERT Exemplar Chemistry [English] Class 12
Chapter 13 Amines
Multiple Choice Questions (Type - I) | Q 61 | Page 190

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