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(D) The reaction between benzaldehyde $(Ph-CHO)$ and acetaldehyde $(CH_3-CHO)$ in the presence of a base like $Ca(OH)_2$ followed by heating $(\Delta)

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$Ph-CH=CH-CHO$

Vedclass · Answer

(D) The reaction between benzaldehyde $(Ph-CHO)$ and acetaldehyde $(CH_3-CHO)$ in the presence of a base like $Ca(OH)_2$ followed by heating $(\Delta)$ is a Claisen-Schmidt condensation,which is a type of cross-aldol condensation. $1$. The $\alpha$-hydrogen of acetaldehyde is removed by the base to form an enolate nucleophile $(CH_2^-CHO)$. $2$. This enolate attacks the carbonyl carbon of benzaldehyde to form a $\beta$-hydroxy aldehyde intermediate. $3$. Subsequent dehydration upon heating $(\Delta)$ gives cinnamaldehyde $(Ph-CH=CH-CHO)$ as the major product.

Find the major product of the following reaction:
$Ph-CHO + CH_3-CHO \xrightarrow[\Delta]{Ca(OH)_2}$ Major product

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Find the major product of the following reaction: $Ph-CHO + CH_3-CHO \xrightarrow[\Delta]{Ca(OH)_2}$ Major product