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Highly selective Backlog Qs for JEE MainChemistryHydrocarbons

The principle product of the following reaction is:

Options

  1. A​
  2. B​
  3. C​

Correct answer

3

Step-by-step solution

Proceeds through bromonium ion formation, a cyclic bridged ion in presence of methanol. Methoxide anion OCH 3 - as a nucleophile attacks in anti position from back side at C ⊛ atom which can share positive charge of bridged cation in better fashion to give as product. Br and OCH 3 must be trans to one another because CH 3 OH attacks from the anti-position to cyclic bromonium ion.

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