InterviewSolution
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InterviewSolution
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The electrophile, `E^((o+))` attacks the benzene ring to generate the intermediate `sigma`-complex. Of the following which `sigma`-complex is of lowest energy?A. B. C. D. |
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Answer» Correct Answer - 3 The `NO_(2)` group has a powerful electron-withdrawing influenece as it exerts both `-R` and `-I` effects `(-Rgt -I)`. This distabilizes the arenium cation 1,2, and 4 by intensifying their positive charge.On the other hand arenium ion (3) is most stable due to the absence of `NO_(2)` group. |
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