In the reaction of benzaldehyde with acetalde | vedclass

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Question

(B) The reaction between benzaldehyde $(C_6H_5CHO)$ and acetaldehyde $(CH_3CHO)$ in the presence of dilute alkali is a Claisen-Schmidt condensation.Ac

Vedclass · Accepted Answer

$C_6H_5-CH=CH-CHO$

Vedclass · Answer

(B) The reaction between benzaldehyde $(C_6H_5CHO)$ and acetaldehyde $(CH_3CHO)$ in the presence of dilute alkali is a Claisen-Schmidt condensation.Acetaldehyde acts as the nucleophile by forming an enolate ion,which attacks the carbonyl carbon of benzaldehyde.The initial aldol product formed is $C_6H_5-CH(OH)-CH_2-CHO$ ($3$-hydroxy$-3-$phenylpropanal).This product undergoes spontaneous dehydration in the presence of base and heat to form the more stable conjugated product,cinnamaldehyde $(C_6H_5-CH=CH-CHO)$.

In the reaction of benzaldehyde with acetaldehyde in the presence of dilute $NaOH$,the product $(A)$ will be:

Similar Questions

The conversion of $X$ into $Y$ is an example of which reaction?

$\text{Phthalic anhydride}$ $\xrightarrow {PCl_5} A$ $\xrightarrow {LiAlH_4} B$ $\xrightarrow {PCC} C$ $\xrightarrow [\Delta ] {OH^{-}} D$
Compound $D$ is :-

The product $(B)$ in the given reaction is:

What are $X$ and $Y$ respectively in the following reactions?
$C_6H_5COOH \xrightarrow{X} C_6H_5CHO$
$C_6H_5CHO \xrightarrow[OH^-, 293 \ K]{C_6H_5COOH} Y \text{ (Major product)}$

Identify the reaction in which the carbonyl group of aldehydes and ketones is reduced to a methylene group upon treatment with zinc-amalgam and concentrated hydrochloric acid.

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