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Reaction of phenol with chloroform in pr...

Reaction of phenol with chloroform in presence of dilute sodium hydroxide finally introduce which one of the following fuctional group?

A

`-CHCl_(2)`

B

`-CHO`

C

`-CH_(2)Cl`

D

`-COOH`

Text Solution

Verified by Experts

The correct Answer is:
B
On treating phenol with chloroform in presence of sodium hydroxide, a `-CHO` group is introduced at ortho position of benzene ring. This known as Reimer-Tiemann reaction.

The intermediate substituted benzal chloride is hydrolysed in presence of alkali followed by acidification to produced salicylaldehyde.
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