Salicylaldehyde can be prepared by treating phenol with
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → $CHCl_3$ in the presence of aqueous NaOH
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.
