(D) The Clemmensen reduction involves the reduction of a carbonyl group $(C=O)$ to a methylene group $(CH_2)$ using zinc amalgam $(Zn-Hg)$ and concent

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

$Zn-Hg$ with concentrated $HCl$

(D) The Clemmensen reduction involves the reduction of a carbonyl group $(C=O)$ to a methylene group $(CH_2)$ using zinc amalgam $(Zn-Hg)$ and concentrated hydrochloric acid $(HCl)$.Reaction: $R-CO-R + 4[H] \xrightarrow{Zn-Hg, HCl} R-CH_2-R + H_2O$

Class 12 Chemistry 8-1.Aldehydes and Ketones Properties

Medium

In the presence of which of the following is the Clemmensen reduction of ketones carried out?

A
$H_2$ with $Pd$ catalyst
B
With glycol
C
$LiAlH_4$ in water
D
$Zn-Hg$ with concentrated $HCl$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

8-1.Aldehydes and Ketones

Subtopic

Properties

In the reaction sequence,
$Cyclohex-2-en-1-one \xrightarrow[(ii) H_2O/H^+]{(i) CH_3MgBr/CuCl} (X)$
Product $(X)$ will be:

Medium

View Solution

Benzyl alcohol is obtained from benzaldehyde by:

Medium

View Solution

Draw structures of the following derivatives:
$(i)$ The $2,4-$dinitrophenylhydrazone of benzaldehyde
$(ii)$ Cyclopropanone oxime
$(iii)$ Acetaldehyde dimethyl acetal
$(iv)$ The semicarbazone of cyclobutanone
$(v)$ The ethylene ketal of hexan$-3-$one
$(vi)$ The methyl hemiacetal of formaldehyde

Difficult

View Solution

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

MediumAIIMS 2015

View Solution

What is Fehling solution?

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

In the presence of which of the following is the Clemmensen reduction of ketones carried out?

Similar Questions

In the reaction sequence,$Cyclohex-2-en-1-one \xrightarrow[(ii) H_2O/H^+]{(i) CH_3MgBr/CuCl} (X)$Product $(X)$ will be:

Benzyl alcohol is obtained from benzaldehyde by:

Draw structures of the following derivatives:$(i)$ The $2,4-$dinitrophenylhydrazone of benzaldehyde$(ii)$ Cyclopropanone oxime$(iii)$ Acetaldehyde dimethyl acetal$(iv)$ The semicarbazone of cyclobutanone$(v)$ The ethylene ketal of hexan$-3-$one$(vi)$ The methyl hemiacetal of formaldehyde

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

What is Fehling solution?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

In the reaction sequence,
$Cyclohex-2-en-1-one \xrightarrow[(ii) H_2O/H^+]{(i) CH_3MgBr/CuCl} (X)$
Product $(X)$ will be:

Draw structures of the following derivatives:
$(i)$ The $2,4-$dinitrophenylhydrazone of benzaldehyde
$(ii)$ Cyclopropanone oxime
$(iii)$ Acetaldehyde dimethyl acetal
$(iv)$ The semicarbazone of cyclobutanone
$(v)$ The ethylene ketal of hexan$-3-$one
$(vi)$ The methyl hemiacetal of formaldehyde

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.