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(CH3)3C—CHO does not undergo Aldol condensation due to

1. three electron donating methyl groups
2. cleavage taking place between C—CHO bond
3. absence of alpha hydrogen atom in the molecule
4. bulky (CH3)3C— group

Correct answer: absence of alpha hydrogen atom in the molecule

Solution

Aldol condensation requires the presence of at least one alpha hydrogen atom, which is absent in (CH3)3C—CHO due to the bulky tert-butyl group.

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