Question

CH₃
|
CH₃ – C – CHO does not show aldol condensation
|
CH₃
because
(a) carbon is bounded by 3 heavy methyl group
(b) due to absence of α-hydrogen
(c) it is a neutral molecule
(d) due to hindrance created by methyl for carbanion.

Answer 1

$\huge\underline \mathfrak \blue{Answer}$

(b) due to absence of α-hydrogen

Answer 2

Tertiary aldehyde i.e, CH₃CH₃CCH₃CHO does not show aldol condensation because (b) Due to absence of α-Hydrogen .

        C₃H

         |

CH₃ -C- CHO = Structure of Tertiary aldehyde

         |

        CH₃

• The α-Carbon is attached with 3 methyl group having no α-Hydrogen to react or show the aldol condensation.
• α-Hydrogen is necessary to undergo Aldol condensation.