試題詳解

17. In electrophilic aromatic substitution reactions, the hydroxyl group is an o,p-director because:
(A) it donates electron density to the ring by induction and destabilizes the meta sigma complex.
(B) it donates electron density to the ring by induction and stabilizes the ortho and para sigma complexes.
(C) it donates electron density to the ring by resonance and destabilizes the meta sigma complex.
(D) it donates electron density to the ring by resonance and stabilizes the ortho and para sigma complexes.
(E) None of the above.