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Identify the major product obtained in the following reaction.

hard

Aldehydes, Ketones and Carboxylic Acids

2023

chemistry

option

option

option

option

Explanation

To solve this problem, we need to analyze the given reaction: $\newline$ The starting compound is phthalaldehyde, which reacts with $2[Ag(NH_3)_2]^+$

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and

3OH^-

under heat.

\newline

This is a typical reaction for the oxidation of aldehydes using Tollen's reagent.

\newline

Step-by-step mechanism:

\newline

1. The aldehyde group in phthalaldehyde is oxidized by Tollen's reagent.

\newline

• The aldehyde group (CHO) is converted to a carboxylate group (COO^-).

\newline

• Silver ions are reduced to metallic silver, which is not shown in the product.

\newline

2. The major product is the dicarboxylate form of the starting compound.

\newline

Analyzing the options:

\newline

• Option 1: Incorrect, as it shows a diol.

\newline

• Option 2: Incorrect, as it shows a ketone and alcohol.

\newline

• Option 3: Correct, as it shows the dicarboxylate product.

\newline

• Option 4: Incorrect, as it shows a carboxylate and alcohol.

\newline

Therefore, the correct option is Option 3.