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Haloarenes undergo the usual electrophilic reactions of the benzene ring such as halogenation, nitration, sulphonation and Friedel-Crafts reactions. Halogen atom besides being slightly deactivating is o, p-directing; therefore, further substitution occurs at ortho- and para-positions with respect to the halogen atom. The o, p-directing influence of halogen atom can be easily understood if we consider the resonating structures of halobenzene as shown:
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Predict the minor product when chlorobenzene reacts with acteyl chloride in the presence of anhydrous AlCl3. |
4-Chloroacetophenojne 2-Chloroacetophenone 3-Chloroacetophenone None of the above |
2-Chloroacetophenone |