What will be the product, when carboxy phenol, obtained by Reimer-Tiemann’s process, is deoxidised with Zn-powder? (a) (b) (a) (b) (c) (d)

The Reimer- Tiemann reaction is carried out on phenols in presence of chloroform and we obtain a hydroxybenzaldehyde as the end product. It proceeds through electrophilic substitution pathway. Salicylic acid obtained by Reimer- Tiemann reaction of phenol, upon deoxidation gives benzoic acid. The reaction is- Therefore, the correct answer is option – (d)