Which of the following aldehydes is less reac | vedclass

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

Question

(A) The reactivity of aldehydes towards nucleophilic addition reactions depends on two main factors: steric hindrance and electronic effects.$1$. Ster

Vedclass · Accepted Answer

Benzaldehyde

Vedclass · Answer

(A) The reactivity of aldehydes towards nucleophilic addition reactions depends on two main factors: steric hindrance and electronic effects.$1$. Steric hindrance: As the size of the alkyl group attached to the carbonyl carbon increases,the attack of the nucleophile becomes more difficult.$2$. Electronic effects: Electron-donating groups ($+I$ or $+M$ effect) decrease the electrophilicity of the carbonyl carbon,thereby reducing reactivity.In $C_6H_5CHO$ (Benzaldehyde),the phenyl group is bulky (high steric hindrance) and also exerts a $+M$ effect (resonance),which stabilizes the carbonyl carbon and reduces its electrophilicity.Therefore,the decreasing order of reactivity is: $HCHO > CH_3CHO > CH_3CH_2CH_2CHO > C_6H_5CHO$.Thus,$C_6H_5CHO$ is the least reactive.

Which of the following aldehydes is less reactive towards nucleophilic addition reaction?

Similar Questions

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

Explain aldol condensation and the acidity of the $\alpha$-carbon of aldehydes and ketones. Provide the aldol condensation reactions for $ethanal$ and $propanone$.

Which reagent is suitable for the following transformation?

Identify the product $Y$ in the following reaction: $CH_3-CH=CH-CH_2-CHO + H_2 \xrightarrow{Ni} Y$

Chlorine reacts with ethanol to give

Vedclass Test Series

Exam Paper Generator

Online Exam Module