Which will give aromatic electrophilic reaction faster benzene or nitrobenzene?

Because the benzene acts as a nucleophile in electrophilic aromatic substitution, substituents that make the benzene more electron-rich can accelerate the reaction. Phenol, C6H5OH, undergoes nitration a thousand times faster than benzene does. Nitrobenzene, C6H5NO2, undergoes the reaction millions of times more slowly.

Is nitrobenzene more reactive than anisole?

Anisole reacts with electrophiles in the electrophilic aromatic substitution reaction more quickly than benzene, which in turn reacts more quickly than nitrobenzene. Rate of reaction: Anisole > Benzene > Nitrobenzene.

Which gives the fastest rate of electrophilic substitution?

A.

B.

C.

D.

Answer. D.

Electrophilic substitution will be fastest at position due to hyperconjugation and + I effect of -CH3 group.

Is anisole more reactive than benzene?

Anisole is more reactive than benzene in electrophilic aromatic substitution, due to resonance donation of electrons by the methoxy group.

Why methoxy group increases the rate of electrophilic aromatic substitution?

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Is nitrobenzene more reactive than benzene?

1. Notice that nitrobenzene is less reactive than benzene because the nitro group is a deactivating substituent. Notice also that meta-substitution reactions on nitrobenzene are faster than para-substitution reactions because the nitro group is a meta-directing group.

Which is more reactive than benzene for electrophilic substitution?

Phenol is more reactive than benzene towards electrophilic substitution reaction.

Why is nitrobenzene less reactive than benzene?

Notice that nitrobenzene is less reactive than benzene because the nitro group is a deactivating substituent. Notice also that meta-substitution reactions on nitrobenzene are faster than para-substitution reactions because the nitro group is a meta-directing group.

What increases the rate of electrophilic aromatic substitution?

Experiments have shown that substituents on a benzene ring can influence reactivity in a profound manner. For example, a hydroxy or methoxy substituent increases the rate of electrophilic substitution about ten thousand fold, as illustrated by the case of anisole in the virtual demonstration (above).

Why is a methoxy group more activating than a methyl group?

Why is a methoxy group more activating than a methyl group? O It creates a fourth resonance structure in the sigma complex O It directs to the ortho-meto configurations O Its stericinteraction enhances the regloselectivity towards lower energy configurations O Its induction effects amplify the activation.

Is electrophilic substitution possible on nitrobenzene rings?

As seen in the above diagram explained by resonance structures of nitrobenzene it is clear that electrophilic substitution on such ring is difficult . however there is a possibility of electrophile attacking meta position but still the interaction is difficult.

Why is anisole more reactive than benzene in electrophilic aromatic substitution?

Anisole is more reactive than benzene in electrophilic aromatic substitution, due to resonance donation of electrons by the methoxy group. This also makes it an o,p director.

Why does benzene undergo electrophilic substitution reaction with chlorobenzene?

Benzene has three resonance structures to the 3 conjugated double bonds and therefore, electrophilic substitution reaction takes place in benzene ring. But due to the inductive effect of chlorobenzene, the negative charge density of the benzene ring decreases and reactivity also decreases.

Why is the electrophilic substitution reaction faster at the para position?

Due to steric hindrance at ortho position the attack is much favourable at para position. During electrophilic substitution +R and -R groups affect the rate of reaction. Where the presence of a +R group increases the rate and -R group decreases the rate of reaction.

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