Correct order of reactivity in nucleophilic a | vedclass

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

Question

(A) The reactivity of carbonyl compounds towards nucleophilic addition depends on the magnitude of the positive charge on the carbonyl carbon.Electron

Vedclass · Accepted Answer

$iii > i > ii > iv$

Vedclass · Answer

(A) The reactivity of carbonyl compounds towards nucleophilic addition depends on the magnitude of the positive charge on the carbonyl carbon.Electron-withdrawing groups $(-NO_2)$ increase the electrophilicity of the carbonyl carbon,thereby increasing reactivity.Electron-donating groups $(-CH_3)$ decrease the electrophilicity,thereby decreasing reactivity.Steric hindrance also plays a role; ketones $(iv)$ are less reactive than aldehydes due to steric and electronic factors.Comparing the compounds:(iii) $p$-Nitrobenzaldehyde: $-NO_2$ is a strong electron-withdrawing group,making it the most reactive.$(i)$ Benzaldehyde: No substituent.(ii) $p$-Methylbenzaldehyde: $-CH_3$ is an electron-donating group,making it less reactive than benzaldehyde.(iv) Acetophenone: It is a ketone,which is less reactive than aldehydes due to the $+I$ effect of the methyl group and steric hindrance.The order is: $(iii) > (i) > (ii) > (iv)$.

Correct order of reactivity in nucleophilic addition reaction is:
$(i)$ Benzaldehyde
(ii) $p$-Methylbenzaldehyde
(iii) $p$-Nitrobenzaldehyde
(iv) Acetophenone

Similar Questions

Which of the following compounds will react with water?

Which of the following compounds has the greatest extent of hydration?

Consider the given reaction. Identify $X$ and $Y$.

$A$ mixture of benzaldehyde and formaldehyde on heating with aqueous $NaOH$ solution gives:

The molecular formula of compound $A$ is $C_2Cl_3OH$. It reduces Fehling's solution and on oxidation gives a monocarboxylic acid $B$. Compound $A$ is obtained by the reaction of chlorine with ethyl alcohol. What is $A$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Correct order of reactivity in nucleophilic addition reaction is:$(i)$ Benzaldehyde(ii) $p$-Methylbenzaldehyde(iii) $p$-Nitrobenzaldehyde(iv) Acetophenone