Question

Explan using equation the mechangin of formation of benzaldcetone.

Answer 1

In presence of dilute base (04-) 1 mol acetone condense with 1 mol benzaldehyde t form 1-mole of benzalacetone The reaction is a mixed aldol condensation. Me - c-me + Ph-CHO of Ph-CH=CH-""-CH3 + H2O * Mechanism : The mechanism can be given as - Step 1 o Abstraction of x-H of ace to ne H₂ C - C-ce H o i (enolate) Step 2 : Nucleophilie attack of the eno late to the carbonyl carbon of benzaldehyde -

li ccto + H-C O=uk 00 CH₂ - C - CHO - CH (1) Step 3: Protonation step occurs CH3 - C - CH2 - CHO H-oh - CH₂ - CHO I dehydration of 1 molecule of H2o take place as below - 0 % (HH3 -C- CH cho CH3-C-CH=CH- Benzalacetone.