Arrange the following compounds in decreasing | vedclass

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

Question

(A) The rate of electrophilic addition reaction is directly proportional to the stability of the carbocation intermediate formed after the attack of t

Vedclass · Accepted Answer

$S > Q > R > P$

Vedclass · Answer

(A) The rate of electrophilic addition reaction is directly proportional to the stability of the carbocation intermediate formed after the attack of the electrophile on the double bond.Electron-donating groups $(EDG)$ increase the stability of the carbocation,while electron-withdrawing groups $(EWG)$ decrease it.$(S)$ $-N(Me)_2$ is a strong $+M$ group,making the carbocation most stable.$(Q)$ $-OCH_3$ is a $+M$ group,but weaker than $-N(Me)_2$.$(R)$ $-CH_3$ is a $+I$ and hyperconjugative group,providing moderate stability.$(P)$ $-CHO$ is a strong $-M$ and $-I$ group,making the carbocation least stable.Therefore,the decreasing order of the rate of electrophilic addition is $S > Q > R > P$.

Arrange the following compounds in decreasing order of the rate of electrophilic addition reaction:
$(P)$ $p$-vinylbenzaldehyde
$(Q)$ $p$-vinylanisole
$(R)$ $p$-methylstyrene
$(S)$ $p$-dimethylaminostyrene

Similar Questions

Which of the following compounds will not give a precipitate with $AgNO_3$?

The major product formed when $1$-Bromo-$3$-chlorocyclobutane reacts with metallic sodium in dry ether is

The major product obtained in the following reaction is $:$

The isomeric deuterated bromide with molecular formula $C_4H_8DBr$ having two chiral carbon atoms is

In $S_{N}2$ reactions,the correct order of reactivity for the following compounds:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following compounds in decreasing order of the rate of electrophilic addition reaction:$(P)$ $p$-vinylbenzaldehyde$(Q)$ $p$-vinylanisole$(R)$ $p$-methylstyrene$(S)$ $p$-dimethylaminostyrene