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Reaction Mechanism : haloalkanes haloarenes nucleophilic substitution examples

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

(i) Why are haloalkanes more reactive towards nucleophilic substitution reaction than haloarenes ? (ii) Which one of the following two substance sundergoes S_(N)1 reaction faster and why ?

(a) Account for the following : (i) Electrophilic substitution reactions in haloarenes occur slowly. (ii) Haloalkanes, though polar, are insoluble in water. (b) Arrange the following compounds in increasing order of reactivity towards S_(N)2 displacement: 2-Bromo-2-Methylbutane, 1-Bromopentane, 2-Bromopentane