write a short note on Reimer-Tiemann reaction?
Reimer-Tiemann reaction:
On treating phenol with chloroform in the presence of sodium hydroxide, a �CHO group is introduced at ortho position of benzene ring. This reaction is known as Reimer - Tiemann reaction.
The intermediate substituted benzal chloride is hydrolysed in the presence of alkali to produce salicylaldehyde.