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

What is the total number of benzene derivatives with the molecular formula $C_6H_3Cl_3$?

Which of the following groups have an activating effect on the benzene ring?
$-OH, -COCH_3, -NO_2, -NH_2, -Cl, -Br, -NHCOCH_3, -COOH$

The rate-determining step for the preparation of nitrobenzene from benzene is:

Which of the following is not formed by the ozonolysis of $o-$xylene?

Identify the end product $(Z)$ in the sequence of the following reactions:
$C_2H_4Br_2$ $\xrightarrow[(ii) NaNH_2]{(i) Alc. KOH} X$ $\xrightarrow[873 \ K]{\text{Red hot Fe tube}} Y$ $\xrightarrow[\text{Anhy } AlCl_3, \Delta]{CH_3COCl} Z$

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 $(C_6H_6)$