Which of the following is the most stable car | vedclass

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(D) The stability of a carbocation is determined by the electronic effects of the substituents attached to the benzene ring.Electron-donating groups $

Vedclass · Accepted Answer

$p-CH_3O-C_6H_4-CH_2^+$

Vedclass · Answer

(D) The stability of a carbocation is determined by the electronic effects of the substituents attached to the benzene ring.Electron-donating groups $(EDG)$ increase the stability of a carbocation by donating electron density through resonance or inductive effects.Electron-withdrawing groups $(EWG)$ decrease the stability of a carbocation by withdrawing electron density.In the given options:$1$. $-NO_2$ is a strong $EWG$ ($-M$ and $-I$ effect).$2$. $-Cl$ is an $EWG$ ($-I$ effect,though it has $+M$ effect,the $-I$ effect dominates in this position).$3$. $-H$ is the reference (no effect).$4$. $-OCH_3$ is an $EDG$ ($+M$ effect).Since $-OCH_3$ is an electron-donating group,it stabilizes the positive charge on the benzylic carbon most effectively.Therefore,$p-CH_3O-C_6H_4-CH_2^+$ is the most stable carbocation.

Which of the following is the most stable carbocation?

Similar Questions

When do positive and negative charges appear on a carbon atom? Give examples.

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Identify the correct order of stability of the following carbocations:

The hybridization of the positively charged carbon and the negatively charged carbon in the following structures are respectively:

Intermediates formed in the reactions $P$ and $Q$ are:
$P: CH_3-CH=CH_2 \xrightarrow{HCl}$
$Q: CH_3-CH=CH_2 \xrightarrow[\text{Peroxide}]{HCl}$

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