Which of the following compounds would undergo aldol condensatino ? Write structures of the products expected.
i) 2-Methylpentanal ii) 1-Phenylpropanone
iii) Phenyl acetaldehyde iv) 2,2-Dimethylbutanal

Explanation

Compounds having one (or) more `alpha`-H atoms undergo aedol condensation.
`to` So from above only first three compounds having `alpha`-H atoms. Therefore they undergo aldol condensation . They are namely
i) 2-methyl Pentanal ii)1-Phenyl propanone iii) Phenyl acetaldehyde
i) 2-methyl Pentanal
`underset("2-Methyl Pentanal")overset(alpha-H)(2CH_(3)CH_(2)CH_(2)-underset(CH_(3))underset(|)overset(I)CH-CHOunderset("Aldol Condensation")overset("Dil. NaOH")to)`