Decide the correct order of reactivity of the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Electrophilic aromatic substitution reactivity depends on the electron density of the benzene ring.Groups that donate electrons via inductive $(+I

Vedclass · Accepted Answer

$II > III > IV > I$

Vedclass · Answer

(B) Electrophilic aromatic substitution reactivity depends on the electron density of the benzene ring.Groups that donate electrons via inductive $(+I)$ or hyperconjugation effects activate the ring,while electron-withdrawing groups deactivate it.$II$ (Toluene) has a $-CH_3$ group,which activates the ring via $+I$ and hyperconjugation.$III$ (Ethylbenzene) has a $-CH_2CH_3$ group,which also activates the ring via $+I$ and hyperconjugation,but the $-CH_3$ group in toluene is a slightly stronger activator due to less steric hindrance and slightly better hyperconjugative stabilization compared to the ethyl group in some contexts,or they are very similar; however,standard reactivity order for alkylbenzenes is $Toluene > Ethylbenzene$.$IV$ (Benzene) has no substituents.$I$ (Phenyl benzoate) has a $-COOC_6H_5$ group,which is a strong electron-withdrawing group ($-I$ and $-M$ effects),significantly deactivating the ring.Thus,the order of reactivity is $II > III > IV > I$.

Decide the correct order of reactivity of the following compounds towards electrophilic aromatic substitution (halogenation) with $(Cl_2 + AlCl_3)$:
$I$: Phenyl benzoate $(C_6H_5COOC_6H_5)$
$II$: Toluene $(C_6H_5CH_3)$
$III$: Ethylbenzene $(C_6H_5CH_2CH_3)$
$IV$: Benzene $(C_6H_6)$

Similar Questions

Identify the correct statements:
The presence of $-NO_{2}$ group in a benzene ring:

Which of the following statements is not correct?

What is the product formed by the reaction of toluene with $KMnO_4$?

The major product obtained when the following compound is treated with $Br_2/Fe$ is:

Identify the product $P$ obtained in the following reaction:
$\text{Benzene} + \text{Ozone (excess)}$ $\xrightarrow{CCl_4} \text{Benzene triozonide}$ $\xrightarrow{Zn/H_2O} P + H_2O_2$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Decide the correct order of reactivity of the following compounds towards electrophilic aromatic substitution (halogenation) with $(Cl_2 + AlCl_3)$:$I$: Phenyl benzoate $(C_6H_5COOC_6H_5)$$II$: Toluene $(C_6H_5CH_3)$$III$: Ethylbenzene $(C_6H_5CH_2CH_3)$$IV$: Benzene $(C_6H_6)$