Q. Which of the following reagents will produce salicylaldehyde on reaction with phenol?
Delhi UMET/DPMTDelhi UMET/DPMT 2004
Solution:
This reaction is Reimer-Tiemann reaction with $CHCl _{3}$ and aq.
alkali $( NaOH )$ phenol gives salicylaldehyde and with $CCl _{4}$ and $NaOH$ phenol gives salicylic acid.

