When phenol reactes with `CHCl_(3)` and NaOH followed by acidification, salicyladehyde is obtained. Which of the following species are involed in the above-mentioned reaction as intermediates ?

Options

A.
B.
C.
D.

Answer

D

Explanation

Riemer-Tiemann reaction involves electrophilic substitution on the hogly reactive phenoxide ring.
`HC CI_(3) +OH^(-) rarr H_(2)O^(-) :C CI_(3)`
`:barC CI_(3)rarrCI^(-) underset("sextet of electrons")underset("C has only a")( :C CI_(2))`