Aldehydes and ketones having at least one α-hydrogen atom in presence of dilute alkali give β-hydroxy aldehyde or β-hydroxy ketone. 
Caution Those aldehydes which does not have α-hydrogen atom like HCHO, does not give aldol condensation reaction.
The product formed in aldol condensation is:
Held on 30 Apr 2007 · Verified 9 Jul 2026.
a-beta hydroxy aldehyde or a betahydroxy ketone
an alpha-hydroxy aldehyde or ketone
an alpha, beta unsaturated ester
a beta-hydroxy acid
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