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Chemistry · PYQ NEET UG 2017

हिन्दी

Identify A and predict the type of reaction.\n(Reaction: Chloro/bromo anisole with \( \text{NaNH}_2 \) yielding substitution product)

Question diagram
  1. A
    \( \text{OCH}_3 \) group with \( \text{NH}_2 \) attached and elimination addition reaction
  2. B
    \( \text{OCH}_3 \) group with Br attached and cine substitution reaction
  3. C
    \( \text{OCH}_3 \) group with \( \text{NH}_2 \) attached and cine substitution reaction
  4. D
    \( \text{OCH}_3 \) group with \( \text{NH}_2 \) attached and substitution reaction
View Answer & Solution

Correct answer · Option A

\( \text{OCH}_3 \) group with \( \text{NH}_2 \) attached and elimination addition reaction

Explanation

Reaction of aryl halides with \( \text{NaNH}_2 \) proceeds via a benzyne intermediate, which involves elimination followed by addition (cine substitution can also occur, but benzyne mechanism is elimination-addition). Wait, let's look closely at standard NEET answer key: Elimination-addition (Benzyne mechanism).
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