Aryl halides are extremely less reactive towards nucleophilic substitution. Predict and explain the order of reactivity of the following compounds towards nucleophilic substitution:
This is a short answer type question as classified in NCERT Exemplar
Because of resonance stabilisation, aryl halides are less reactive to nucleophilic substitution. The inclusion of a -NO2, an electron-withdrawing group in the ortho or para position, enhances the aryl halide's sensitivity to substitution. The more electron withdrawing groups there are in the aryl halide, the more reactive it is. The decreasing sequence of reactivity, according to this theory, is III > II > I.
<p><span data-teams="true">This is a short answer type question as classified in NCERT Exemplar</span></p><p><span data-teams="true">Because of resonance stabilisation, aryl halides are less reactive to nucleophilic substitution. The inclusion of a <strong>-NO<sub>2</sub></strong>, an electron-withdrawing group in the ortho or para position, enhances the aryl halide's sensitivity to substitution. The more electron withdrawing groups there are in the aryl halide, the more reactive it is. The decreasing sequence of reactivity, according to this theory, is III > II > I.</span></p>
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