Question

SHOW FULL MECHANISM AND REDRAW (In your own way) OF Dibenzalacetone by the Aldol Condensation reaction BELOW

co.ken, + CH,CCH CH.CH NaOH -CH=CHCCH=CH- cu condcn=cr YW 40.01 Benzaldehyde MW 106.13, bp 178°C den. 1.04 Acetone (2-Propanone) MW 58.08. bp 56°C den 0.790 Dibenzalacetone (1,5-Diphenyl-1,4-pentadien-3-one) MW 234,30

Answer 1

NaOH e t cote cha Noot cuzcu licensen@ CH=CH– съсн Benzaldehyde Acetone Dibenzalacefore acetone to give enolate ion. - Base reacts with H - Aldol to form on troustes give Nucleophilic addition to Benzaldehyde alkoxide ion, which upon proton yahy choxy conbonyl groupine. Aldol. . 내 ümph o ph -oh -Ho to form x-ß unsaturated place of aldol takes Dehydration to + H₂O aldehyde. MOH + OH - -ONG -ph -H

X-B unsaturated aldehyde in nucleophilic addition. Hence, Step ③, again gives dibenzalacetone . is formed eventually