Q17 / 105 · JEE Main 2008 · Chemistry

The electrophile, $\mathrm{E}^{\oplus}$ attacks the benzene ring to generate the intermediate $\sigma$-complex. Of the following, which $\sigma$-complex is of lowest energy?

  • A
    Figure
  • Correct answer
    B
    Figure
  • C
    Figure
  • D
    Figure

Solution

$-\mathrm{NO}_2$ is electron withdrawing which will destabilize $\sigma$ - complex.

Hence, the correct answer is option: 'B'.

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