Arrange the following compounds in decreasing | 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 reaction $(NAR)$ is governed by two main factors:$1.$ Electronic effect: The pr

Vedclass · Accepted Answer

$I > II > III > IV$

Vedclass · Answer

(A) The reactivity of carbonyl compounds towards nucleophilic addition reaction $(NAR)$ is governed by two main factors:$1.$ Electronic effect: The presence of electron-donating groups $(EDG)$ decreases the electrophilicity of the carbonyl carbon,thereby reducing reactivity.$2.$ Steric effect: Increased steric hindrance around the carbonyl carbon hinders the approach of the nucleophile,reducing reactivity.Comparing the given compounds:$I: HCHO$ (Formaldehyde) - No $EDG$,least steric hindrance.$II: CH_3CHO$ (Acetaldehyde) - One $CH_3$ group ($+I$ effect),moderate steric hindrance.$III: CH_3COCH_3$ (Acetone) - Two $CH_3$ groups ($+I$ effect),higher steric hindrance.$IV: PhCOCH_3$ (Acetophenone) - One $Ph$ group (strong resonance $EDG$ and bulky),highest steric hindrance.Thus,the decreasing order of reactivity is $I > II > III > IV$.

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:
$I: HCHO$
$II: CH_3CHO$
$III: CH_3COCH_3$
$IV: PhCOCH_3$

Similar Questions

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:
$I: HCHO$
$II: CH_3CHO$
$III: CH_3COCH_3$
$IV: PhCOCH_3$

Statement-$I$ :- Acetaldehyde and acetone can be distinguished by Tollen's reagent.
Statement-$II$ :- Aromatic aldehyde does not give Fehling test.

Aldol condensation will not take place in

Consider the following reactions:
$A$ $\xrightarrow[(i) CH_3MgBr]{(ii) H_3O^{+}} B$ $\xrightarrow[573 \text{ K}]{Cu} 2\text{-methyl-2-butene}$
The mass percentage of carbon in $A$ is:

Which one among the following compounds will most readily be dehydrated under acidic condition?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:$I: HCHO$$II: CH_3CHO$$III: CH_3COCH_3$$IV: PhCOCH_3$

Similar Questions

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:$I: HCHO$$II: CH_3CHO$$III: CH_3COCH_3$$IV: PhCOCH_3$

Statement-$I$ :- Acetaldehyde and acetone can be distinguished by Tollen's reagent.Statement-$II$ :- Aromatic aldehyde does not give Fehling test.

Aldol condensation will not take place in

Consider the following reactions: $A$ $\xrightarrow[(i) CH_3MgBr]{(ii) H_3O^{+}} B$ $\xrightarrow[573 \text{ K}]{Cu} 2\text{-methyl-2-butene}$ The mass percentage of carbon in $A$ is:

Which one among the following compounds will most readily be dehydrated under acidic condition?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:
$I: HCHO$
$II: CH_3CHO$
$III: CH_3COCH_3$
$IV: PhCOCH_3$

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:
$I: HCHO$
$II: CH_3CHO$
$III: CH_3COCH_3$
$IV: PhCOCH_3$

Statement-$I$ :- Acetaldehyde and acetone can be distinguished by Tollen's reagent.
Statement-$II$ :- Aromatic aldehyde does not give Fehling test.

Consider the following reactions:
$A$ $\xrightarrow[(i) CH_3MgBr]{(ii) H_3O^{+}} B$ $\xrightarrow[573 \text{ K}]{Cu} 2\text{-methyl-2-butene}$
The mass percentage of carbon in $A$ is: