Chemistry · Phenols: Acidic nature, electrophilic substitution reactions, halogenation, nitration and sulphonation, Reimer Tiemann reaction
Phenol Salicyl aldehyde The above reaction is known as:
Phenol \( \frac{1 . C H C l_{3} / N a O H}{2 . H^{+}} \) Salicyl aldehyde The above reaction is known as:
- A. Gattermann reaction
- B. Sandmeyer reaction
- C. Perkin reaction
- D. Reimer-Tiemann reaction
Step-by-step solution
The reaction of phenol with chloroform in the presence of NaOH followed by acidification to yield salicylaldehyde is specifically known as the Reimer-Tiemann reaction. It involves the formation of a dichlorocarbene intermediate, which attacks the ortho position of the phenoxide ion, leading to aldehyde formation after hydrolysis.