Question:
Which of the following is not intermediate in the acid catalysed reaction of benzaldehyde with 2 equivalent of methanol to give acetal?
Which of the following is not intermediate in the acid catalysed reaction of benzaldehyde with 2 equivalent of methanol to give acetal?
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The reaction intermediates in acetal formation involve carbonyl groups and methanol, not ethers.
Updated On: Jan 12, 2026
- A
- B
- C
- D
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The Correct Option is C
Solution and Explanation
Step 1: Understand the reaction mechanism.
In the reaction of benzaldehyde with methanol, the intermediate is formed by protonation and nucleophilic attack, but \( \text{H}_2\text{C} - \text{O} - \text{CH}_3 \) is not an intermediate in this reaction.
Step 2: Conclusion.
Thus, the intermediate that is not involved is \( \text{H}_2\text{C} - \text{O} - \text{CH}_3 \).
Final Answer: \[ \boxed{\text{H}_2\text{C} - \text{O} - \text{CH}_3} \]
In the reaction of benzaldehyde with methanol, the intermediate is formed by protonation and nucleophilic attack, but \( \text{H}_2\text{C} - \text{O} - \text{CH}_3 \) is not an intermediate in this reaction.
Step 2: Conclusion.
Thus, the intermediate that is not involved is \( \text{H}_2\text{C} - \text{O} - \text{CH}_3 \).
Final Answer: \[ \boxed{\text{H}_2\text{C} - \text{O} - \text{CH}_3} \]
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