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At low temperature phenol reacts wity Br...

At low temperature phenol reacts wity `Br_(2)` in `CS_(2)` to form

A

`m`-bromophenol

B

`p`-bromophenol

C

`o`-and `p`-bromophenol

D

`2,4,6-`tribromophenol

Text Solution

Verified by Experts

The correct Answer is:
C

In presence of non-polar solvent `(CS_(2))` the ionization phenol is suppressed. The ring is slightly activated and hence mono substitution occurs.
On the other hand with `Br_(2)` and water, phenol forms `2,4,6`-tribromo phenol.

In aqueous solution phenol ionizes to give phenoxide ion. Due to the presence of negative charge on oxygen the benzene ring is highly activiated and hence trisubtituted product is obtained.
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Knowledge Check

  • At low temperature phenol reacts with Br_2 in CS_2 to form

    A
    m-bromophenol
    B
    o-and p-bromophenol
    C
    p-bromophenol
    D
    2, 4, 6-tribromophenol

  • Phenol reacts with Br_(2) in H_(2)O to give

    A
    m-bromophenol
    B
    o and p-bromophenol
    C
    p-bromophenol
    D
    2, 4, 6-tribromphenol

  • Phenol reacts with bromine in CS_(2) to give

    A
    o-bromophenol
    B
    m-bromophenol
    C
    o and p-bromophenol
    D
    2,4,6-tribromophenol

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