Question

Electrophile ${}^{⨁}N{O}_2$ attacks the following: In which cases ${}^{⨁}N{O}_2$ will attack at meta position.

• A. II and IV
• B. I,II and III
• C. II and I
• D. I only

Answer 1

The correct option is B I,II and III

The electrophie $N{O}_2^{+}$ will attack in the meta position in I, II and III, as trichloromethy group, nitro group and aldehyde group are meta directing groups. On the other hand, $O^{-}$ group is ortho para directing group.