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In the electrophilic substitution of ben...

In the electrophilic substitution of benzene, to restore aromatic character sigma complex releases proton from 

A

`sp^3` hybridised carbon

B

`sp^2` hybridised carbon

C

`sp` hybridised carbon

D

Any one of the carbons

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • In the electrophilic substitution of benzene, to restore aromatic character sigma comlex releases proton from

    A
    `sp^(3)`- hybridised carbon
    B
    `sp^(2)`- hybridised carbon
    C
    sp - hybridised carbon
    D
    Any one of the carbons

  • The electrophilic aromatic substitution proceeds through a

    A
    Free radical
    B
    Sigma complex
    C
    Benzyne
    D
    Carbene

  • Correct statement about the electrophilic substitution in benzene ring is

    A
    Halogens are benzene ring deactivating groups due to resonance.
    B
    Halogens are ortho and para directing groups due to their - I effect.
    C
    Halogens are ortho and para directing and benzene ring activating groups.
    D
    Halogens are benzene ring deactivating groups due to their – I effect.

    • Similar Questions

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    Explain electrophilic substitution reactions of chloro benzene .

    Explain aromatic electroplhilic substitution reactions of benzene.

    Meta directing group in electrophilic substitution in benzene nucleus is

    The typical reaction of benzene and other aromatic compounds is electrophilic substitution. Presence of electron donating group activates the ring towards electrophilic substitution, while presence of electron withdrawing group deactivates the ring towards electrophilic substitution but at the same time activates the ring towards nucleophilic substitution. Some groups are predominantly meta directing and all of these are deactivating. Except halogen, most of the o- and p- directing groups are activating groups. (E.A.S = Electrophilic aromatic substation) Presence of nitro group in benzene ring:

    Electrophilic substitution on mono substituted benzene is determined by electronic effects +1, -M groups are ortho, para directors, where as -1,-M groups are meta directions. When there is a competition between inductive and mesomeric effects, the latter wins over. Electrophilic substitution on disubstituted benzene is determined by the combined effect of both groups. Usually activating group wins over deactivating group. When one of the groups has a lone pair of electrons, that will determine the product formation. Usually a third group will not enter the position in between the two existing groups due to steric reasons.

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