Chemical Reactions of Haloarenes
Chemical Reactions of Haloarenes: Overview
This topic covers concepts such as Chemical Reactions of Haloarenes, Nucleophilic Substitution Reactions of Haloarenes, Less Reactivity of Haloarenes in Nucleophilic Substitution Reactions, Resonance Effect, Instability of Phenyl Carbocation, etc.
Important Questions on Chemical Reactions of Haloarenes
In which of the following conversions oxidation is taking place
(i) propanone to propene
(ii) benzoic acid to benzaldehyde
(iii) bromobenzene to 1-phenylethanol
Benzyl chloride can be prepared from toluene by chlorination with –
Assertion: In mono haloarenes, electrophilic substitution occurs at ortho and para positions.
Reason: Halogen atom is a ring deactivator.
Describe the halogenation in haloarenes.
Define Electrophilic substitution reaction in the haloarenes.
In the Electrophilic substitution reactions, the halogen atom because of its -I effect has some tendency to withdraw electrons from the benzene ring.
Explain the instability of phenyl cation in haloarenes.
Haloarenes does not show mechanism because of instability of _____ (phenyl/benzyl/benzal)cation.
mechanism is possible in haloarenes.
The metal used in the Ullmann reaction is
Explain the Wurtz-Fittig reaction.
Explain Fittig reaction.
Chlorobenzene and sodium react in dry ether medium to yield _____ (organic compound).
Why does benzene undergo an electrophilic substitution reaction easily?
Explain electrophilic substitution reaction in haloarenes.
Electrophilic substitution reactions of Haloarenes are
Electrophilic substitution reactions of Haloarenes are meta directing.
Electrophilic substitution reactions of Haloarenes are
Write the mechanism of the electrophilic substitution reaction of Haloarenes.
Presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards _____ substitution.(nucleophilic/electrophilic)
