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In the nitration of toluene, which position is most likely to be attacked by the

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Question: In the nitration of toluene, which position is most likely to be attacked by the electrophile?

Options:

  1. Ortho position
  2. Meta position
  3. Para position
  4. All positions equally

Correct Answer: Para position

Solution: 

The para position is favored in the nitration of toluene due to the electron-donating effect of the methyl group, which stabilizes the carbocation intermediate.

In the nitration of toluene, which position is most likely to be attacked by the

Practice Questions

Q1
In the nitration of toluene, which position is most likely to be attacked by the electrophile?
  1. Ortho position
  2. Meta position
  3. Para position
  4. All positions equally

Questions & Step-by-Step Solutions

In the nitration of toluene, which position is most likely to be attacked by the electrophile?
  • Step 1: Understand that toluene is a benzene ring with a methyl group (CH3) attached to it.
  • Step 2: Recognize that the methyl group is an electron-donating group, which means it helps to increase the electron density on the benzene ring.
  • Step 3: Identify the positions on the benzene ring where the electrophile can attack: the ortho position (next to the methyl group), the meta position (one carbon away from the methyl group), and the para position (opposite the methyl group).
  • Step 4: Realize that the electron-donating effect of the methyl group stabilizes the carbocation intermediate that forms when the electrophile attacks the ring.
  • Step 5: Determine that the para position is more stable than the ortho position because steric hindrance (crowding) is less at the para position.
  • Step 6: Conclude that the para position is favored for electrophilic attack during the nitration of toluene.
  • Electrophilic Aromatic Substitution – The mechanism by which electrophiles attack aromatic compounds, influenced by substituents on the ring.
  • Resonance Stabilization – The stabilization of carbocation intermediates through resonance, particularly in the context of substituents like methyl groups.
  • Ortho/Para vs. Meta Directing Effects – Understanding how different substituents direct electrophilic attacks to specific positions on the aromatic ring.
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