Assertion : Aldol condensation can be catalys | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The Assertion is correct because aldol condensation involves the formation of a nucleophile (either an enolate ion in base or an enol in acid) whi

Vedclass · Accepted Answer

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

Vedclass · Answer

(B) The Assertion is correct because aldol condensation involves the formation of a nucleophile (either an enolate ion in base or an enol in acid) which attacks the carbonyl carbon.Both acids and bases can catalyze this process.The Reason is also correct because $\beta$-hydroxyaldehydes or ketones (aldols) are unstable and undergo dehydration to form $\alpha,\beta$-unsaturated carbonyl compounds in the presence of an acid.However,the Reason does not explain why the condensation itself is catalyzed by both acids and bases; it describes a subsequent step (dehydration).Therefore,both are correct,but the Reason is not the correct explanation of the Assertion.

Assertion : Aldol condensation can be catalysed both by acids and bases.
Reason : $\beta$-Hydroxyaldehydes or ketones readily undergo acid-catalysed dehydration.

Similar Questions

The reaction of $3$-bromobenzaldehyde with concentrated $NaOH$ $(50\, \%)$ yields which of the following products?

The following reagent converts $C_6H_5COCHO$ to $C_6H_5CHOHCOONa$.

Arrange the following in increasing order of their acidic strength:

$CH_3COOH$ $\xrightarrow{LiAlH_4} X$ $\xrightarrow{Cu, 300^{\circ}C} Y$ $\xrightarrow{\text{Dilute } NaOH} Z$. In the above reaction,$Z$ is:

Methyl alcohol $(CH_3OH)$,ethyl alcohol $(C_2H_5OH)$,and acetone $(CH_3COCH_3)$ were treated with iodine and sodium hydroxide solutions. Which substances will give the iodoform test?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Aldol condensation can be catalysed both by acids and bases.Reason : $\beta$-Hydroxyaldehydes or ketones readily undergo acid-catalysed dehydration.