Why Haloalkanom are more reactive than Haloalkanes

1.	Why Haloalkanom are more reactive than Haloalkanes
Answer» InNucleophilic substitutionreactions aryl halides (haloarenes) are less reactive due to the following reasons: The primary reaction of aromatic compounds isElectrophillicsubstitutionbecause of the aromaticity which benzene posseses. Benzene itself acts as anuceophilewhich isn't in the favour of nucleophilic substitution reactions. Also, in haloarenes theC-Xbond (carbon halogen bond) has a double bond characters due to the lone pair of halogens. Whereas theC-Xbond in alkyl halides is comparitively weaker with respect to the resonance stabilisedC-Xbond in aryl halides. Thus we can conclude that haloalkanes are more reactive than haloarenes.

Answer»

InNucleophilic substitutionreactions aryl halides (haloarenes) are less reactive due to the following reasons:

The primary reaction of aromatic compounds isElectrophillicsubstitutionbecause of the aromaticity which benzene posseses.

Benzene itself acts as anuceophilewhich isn't in the favour of nucleophilic substitution reactions.

Also, in haloarenes theC-Xbond (carbon halogen bond) has a double bond characters due to the lone pair of halogens.

Whereas theC-Xbond in alkyl halides is comparitively weaker with respect to the resonance stabilisedC-Xbond in aryl halides.

Thus we can conclude that haloalkanes are more reactive than haloarenes.

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