Question
Explain the following with an example.Reimer$-$Tiemann reaction.
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Answer
Reimer$-$Tiemann reaction$:$
When phenol is treated with chloroform $\ce{(CHCl_3)}$ in the presence of sodium hydroxide, $a - \ce{CHO}$ group is introduced at the ortho position of the benzene ring.
This reaction is known as the Reimer$-$Tiemann reaction. The intermediate is hydrolyzed in the presence of alkalis to produce salicyclaldehyde.
When phenol is treated with chloroform $\ce{(CHCl_3)}$ in the presence of sodium hydroxide, $a - \ce{CHO}$ group is introduced at the ortho position of the benzene ring.
This reaction is known as the Reimer$-$Tiemann reaction. The intermediate is hydrolyzed in the presence of alkalis to produce salicyclaldehyde.
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