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What is 'X' in the given reaction? CH2OH CH2OH + oxalic acid 210°C → X (major product)

1. CH2 || CH2
2. CH–OH | CH2
3. CHO | CHO
4. CH2OH | CHO

Correct answer: CH2OH | CHO

Solution

The major product of the reaction is formed through the dehydration of CH2OH, resulting in the formation of an aldehyde group (CHO) while retaining one hydroxymethyl group (CH2OH), leading to the structure CH2OH|CHO.

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