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In the electrophilic substituion of benz...

In the electrophilic substituion of benzene ring, the second substituent is directed by the group already present. Electron releasing groups (+I and +M) are ortho-para-directing and activating, whreas the electron withdrawing groups (-I and -M) are meta-directing and deactivating.
Halogens are placed under the category of +T (Tautomeric) groups because they have -Ibdyctuve abd +Mesomeric effect. These groups are deactivating but ortho-para-directing.
In the introduction of third group to the benzene ring, the product of minimum steric gindrance is formed.
A deactivating group in electrophilic substitution reaction :

A

deactivates only rotho- and para-positions

B

deactivates only meta-position

C

deactivates meta-position more than ortho-and para-positions.

D

deactivatesn ortho- and para-positions more than meta-position

Text Solution

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The correct Answer is:
d
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Knowledge Check

  • In the electrophilic substituion of benzene ring, the second substituent is directed by the group already present. Electron releasing groups (+I and +M) are ortho-para-directing and activating, whreas the electron withdrawing groups (-I and -M) are meta-directing and deactivating. Halogens are placed under the category of +T (Tautomeric) groups because they have -Ibdyctuve abd +Mesomeric effect. These groups are deactivating but ortho-para-directing. In the introduction of third group to the benzene ring, the product of minimum steric gindrance is formed. Which of the following is not an ortho, para-directing group ?

    A
    `-F`
    B
    `-NC`
    C
    `-OCH_(3)`
    D
    `-C CI_(3)`

  • In the electrophilic substituion of benzene ring, the second substituent is directed by the group already present. Electron releasing groups (+I and +M) are ortho-para-directing and activating, whreas the electron withdrawing groups (-I and -M) are meta-directing and deactivating. Halogens are placed under the category of +T (Tautomeric) groups because they have -Ibdyctuve abd +Mesomeric effect. These groups are deactivating but ortho-para-directing. In the introduction of third group to the benzene ring, the product of minimum steric gindrance is formed. Answer the follwing questions : Ortho-Xylene on mono nitration gives

    A
    two products
    B
    three products
    C
    one products
    D
    four products

  • In the electrophilic substituion of benzene ring, the second substituent is directed by the group already present. Electron releasing groups (+I and +M) are ortho-para-directing and activating, whreas the electron withdrawing groups (-I and -M) are meta-directing and deactivating. Halogens are placed under the category of +T (Tautomeric) groups because they have -Ibdyctuve abd +Mesomeric effect. These groups are deactivating but ortho-para-directing. In the introduction of third group to the benzene ring, the product of minimum steric gindrance is formed. In the reaction Which of the following products is not formed at all ?

    A
    B
    C
    D

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