Which of the following reactants on reaction | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The reaction of $2$-formylbenzoic acid (phthalaldehyde acid) with concentrated $NaOH$ is a classic example of the Cannizzaro reaction. Since the m

Vedclass · Accepted Answer

$2$-Formylbenzoic acid

Vedclass · Answer

(B) The reaction of $2$-formylbenzoic acid (phthalaldehyde acid) with concentrated $NaOH$ is a classic example of the Cannizzaro reaction. Since the molecule contains both an aldehyde group $(-CHO)$ and a carboxylic acid group $(-COOH)$ in an ortho-position,the aldehyde group undergoes an intramolecular Cannizzaro reaction. The aldehyde group is oxidized to a carboxylate ion $(-COO^-)$ and reduced to a primary alcohol group $(-CH_2OH)$. This results in the formation of a hydroxy-acid intermediate,$2$-hydroxymethylbenzoic acid. Upon acidification,the carboxylic acid group and the alcohol group undergo intramolecular esterification (cyclization) to form the stable five-membered lactone,phthalide.

Which of the following reactants on reaction with conc. $NaOH$ followed by acidification gives the following lactone as the only product?

Similar Questions

The product formed when formaldehyde reacts with ammonia is

This conversion can be achieved by

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It,however,reacts with Grignard reagent and gives a positive iodoform test. The compound is:

Which of the following reacts with alcohol in the presence of dry $HCl$ to form an acetal?

Which of the following is not true about acetophenone?

Vedclass Test Series

Exam Paper Generator

Online Exam Module