Which of the following reagents will produce salicylaldehyde on reaction with phenol?

Question

Which of the following reagents will produce salicylaldehyde on reaction with phenol? (A)  CHCl3/NaOH  (B)  CCl4/NaOH  (C)  CH2Cl2/NaOH  (D)  CH3Cl/NaOH

Tardigrade Admin · Accepted Answer

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.

Q. Which of the following reagents will produce salicylaldehyde on reaction with phenol?

$C H C l_{3} / N a O H$

$CC l_{4} / N a O H$

$C H_{2} C l_{2} / N a O H$

$C H_{3} Cl / N a O H$

This reaction is Reimer-Tiemann reaction with $C H C l_{3}$ and aq.
alkali $(N a O H)$ phenol gives salicylaldehyde and with $CC l_{4}$ and $N a O H$ phenol gives salicylic acid.

Q. Which of the following reagents will produce salicylaldehyde on reaction with phenol?

CHCl3​/NaOH

CCl4​/NaOH

CH2​Cl2​/NaOH

CH3​Cl/NaOH

This reaction is Reimer-Tiemann reaction with CHCl3​ and aq. alkali (NaOH) phenol gives salicylaldehyde and with CCl4​ and NaOH phenol gives salicylic acid.

$C H C l_{3} / N a O H$

$CC l_{4} / N a O H$

$C H_{2} C l_{2} / N a O H$

$C H_{3} Cl / N a O H$

This reaction is Reimer-Tiemann reaction with $C H C l_{3}$ and aq.
alkali $(N a O H)$ phenol gives salicylaldehyde and with $CC l_{4}$ and $N a O H$ phenol gives salicylic acid.