Question

conversion of ethanal into crotonaldehyde

Answer 1

when ethanal (or acetaldehyde) undergoes aldol condensation, then crotanaldehyde is formed.

Answer 2

Answer:

Aldol condensation is a condensation response in natural chemistry wherein an enol or an enolate ion reacts with a carbonyl compound to shape a β-hydroxy aldehyde or β-hydroxy ketone, accompanied via way of means of dehydration to provide a conjugated enone. Aldol condensations are crucial in natural synthesis, due to the fact they offer an awesome manner to shape carbon-carbon bonds.

Aldol condensations also are usually mentioned in college stage natural chemistry instructions as an awesome bond-forming response that demonstrates crucial response mechanisms. In its typical shape, it entails the nucleophilic addition of a ketone enolate to an aldehyde to shape a β-hydroxy ketone, or "aldol" (aldehyde + alcohol), a structural unit observed in lots of obviously going on molecules and pharmaceuticals.

Ethanal conversion in presence of dil NaOH.

$CH_3CHO-----CH_3CH(OH)CH_2CHO$

now, 3-HydroxyButanal goes with dehydration,

$CH_3CH(OH)CH_2CHO ---- CH_3CH=CHCHO$

THIS FORM is crotonaldehyde.

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