Arrange the following compounds in decreasing | vedclass

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

Question

(B) The reactivity of carbonyl compounds towards nucleophilic addition reaction $(NAR)$ depends on two factors: steric hindrance and electronic effect

Vedclass · Accepted Answer

$III > II > I$

Vedclass · Answer

(B) The reactivity of carbonyl compounds towards nucleophilic addition reaction $(NAR)$ depends on two factors: steric hindrance and electronic effects.$1$. Steric hindrance: Smaller groups around the carbonyl carbon allow easier attack by the nucleophile.$2$. Electronic effects: Electron-donating groups (like alkyl groups) decrease the electrophilicity of the carbonyl carbon,while electron-withdrawing groups increase it.Comparing the given compounds:$(III)$ $CH_3CHO$ (Acetaldehyde) has one methyl group and one hydrogen atom.$(II)$ $CH_3COCH_3$ (Acetone) has two methyl groups,which provide more steric hindrance and electron-donating effect than acetaldehyde.$(I)$ $C_6H_5COCH_3$ (Acetophenone) has a phenyl group,which provides significant steric hindrance and also resonance stabilization,making the carbonyl carbon less electrophilic.Thus,the order of reactivity is $CH_3CHO > CH_3COCH_3 > C_6H_5COCH_3$,which corresponds to $(III) > (II) > (I)$.

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:
$(I)$ $C_6H_5COCH_3$
$(II)$ $CH_3COCH_3$
$(III)$ $CH_3CHO$

Similar Questions

Which of the following reactions will produce a chiral molecule?

Which of the following cannot give a yellow $ppt.$ with $I_2/NaOH$?

Complete each synthesis by providing the missing starting material, reagent, or products for the following reactions:

The reagent used in the Wolff-Kishner reduction is

Identify the product $A$ in the following reaction:
$\text{Substrate} \xrightarrow{MnO_2} A$
(The substrate is a benzene ring with a $-OH$ group,a $-COOH$ group,and a $-CH(CH_2CH_3)CHO$ group attached to it.)

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:$(I)$ $C_6H_5COCH_3$$(II)$ $CH_3COCH_3$$(III)$ $CH_3CHO$