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Which of the following compounds is a meta-directing group in electrophilic arom

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Question: Which of the following compounds is a meta-directing group in electrophilic aromatic substitution?

Options:

  1. Amino group (-NH2)
  2. Methyl group (-CH3)
  3. Nitro group (-NO2)
  4. Hydroxyl group (-OH)

Correct Answer: Nitro group (-NO2)

Solution: 

The nitro group (-NO2) is a meta-directing group because it withdraws electrons from the aromatic ring, making the ortho and para positions less favorable for electrophilic attack.

Which of the following compounds is a meta-directing group in electrophilic arom

Practice Questions

Q1
Which of the following compounds is a meta-directing group in electrophilic aromatic substitution?
  1. Amino group (-NH2)
  2. Methyl group (-CH3)
  3. Nitro group (-NO2)
  4. Hydroxyl group (-OH)

Questions & Step-by-Step Solutions

Which of the following compounds is a meta-directing group in electrophilic aromatic substitution?
  • Step 1: Understand what electrophilic aromatic substitution is. It is a reaction where an electrophile replaces a hydrogen atom on an aromatic ring.
  • Step 2: Know what directing groups are. They influence where the electrophile will attach on the aromatic ring.
  • Step 3: Identify the types of directing groups. There are two main types: ortho/para-directing groups and meta-directing groups.
  • Step 4: Learn about the nitro group (-NO2). It is a strong electron-withdrawing group.
  • Step 5: Recognize that because the nitro group withdraws electrons, it makes the positions next to it (ortho and para) less favorable for electrophilic attack.
  • Step 6: Conclude that the nitro group directs electrophiles to the meta position instead, making it a meta-directing group.
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