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In cross aldol condensation between aldehyde and ketone why aldehyde is always an electrophile?
Wiki User
∙ 14y ago
Alkyl groups are electron donating (whereas hydrogen atoms aren't). A ketone has 2 alkyl groups attached to the carbonyl carbon, but an aldehyde has only 1 alkyl group attached to its carbonyl carbon. This gives the aldehyde carbon more positive charge character, which makes it a better electrophile than the ketone. Another factor is less stearic hindrence for carbonyl carbon of aldehyde as compare to ketones.
Wiki User
∙ 14y ago
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