Chporobenzene is extremely leas reactive towards a nucleophilic substitution reaction.Give two reasons and explain
Answers
Answer:
Chlorobenzene is less reactive towards nucleophilic substitution reaction because of the following reasons: ... This results in delocalization of the electrons of C - Cl bond and a partial double bond character develops in the bond, which makes it difficult for the Nucleophile to cleave the C - Cl bond.
Explanation:
The electron pair of chlorine atom is involved in conjugation with the π-electrons of the benzene ring. As a result, electrons of C ---- Cl bond get delocalized and a partial double bond character develops in the bond and hence, it becomes difficult for the nucleophile to cleave the C ----- Cl bond.
INCREASED ELECTRON DENSITY :- A repulsion is suffered by the nucleophile, due to increased electron density on the benzene ring which prohibits the nucleophile to make a close access for the attack on the molecule.