question_answer

When phenol is reacted with \[CHC{{l}_{3}}\]and NaOH followed by acidification, salicylaldehyde is obtained. Which of the following species are involved in the above-mentioned reaction as intermediate?

A)

B)

C)

D)

Correct Answer: D

Solution :

[d] Riemer-Tiemann reaction involves electrophilic substitution on the highly reactive phenoxide ring. \[HCC{{I}_{3}}+O{{H}^{-}}\to {{H}_{2}}O{{+}^{-}}:CC{{I}_{3}}\]