Question

The reaction of phenol with chloroform in the presence of dilute sodium hydroxide introduces which of the following functional group?

• A. $-CHC{l}_2$
• B. $-CHO$
• C. $-C{H}_{2}Cl$
• D. $-COOH$

Answer 1

The correct option is B $-CHO$

Chloroform $\left(CHC{l}_3\right)$ in presence of an alkali $\left(NaOH\right)$ does formylation of phenol at the ortho-position. This is also called as the Reimer-Tiemann reaction.