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JEE Main 2025 Apr 3 Shift 1, Chemistry Q13: Diazonium Salt

JEE Main2025Apr 3, Shift 1Chemistry
Q.

In the following reactions, which one is NOT correct?

  1. A

    1

  2. B

    2

  3. C

    3

  4. D

    4

Solution

The benzenediazonium ion reacts with ethanol not by substitution to give a phenyl ether, but by reduction: ethanol acts as a hydride source and the diazonium group is replaced by H, releasing and giving benzene. This is a deamination via the Schiemann-type/reductive pathway.

So option (1), which shows , is the incorrect transformation.

Options (2), (3) and (4) are standard: reductive deamination, KI iodination, and the Sandmeyer cyanation with respectively, all proceed as written.

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