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Question

(D) The given reaction involves the reduction of an aldehyde group $(-CHO)$ to a methyl group $(-CH_3)$ while preserving the secondary alcohol group $

Vedclass · Accepted Answer

$(i) N_2H_4; (ii) \mathop O\limits^\Theta H, \Delta$

Vedclass · Answer

(D) The given reaction involves the reduction of an aldehyde group $(-CHO)$ to a methyl group $(-CH_3)$ while preserving the secondary alcohol group $(-CH(OH)CH_3)$.$1$. $Red \ P / I_2$ is a strong reducing agent that would reduce both the aldehyde and the alcohol group to an alkane.$2$. $LiAlH_4$ is a strong reducing agent that would reduce the aldehyde to a primary alcohol $(-CH_2OH)$ and would not reduce it to a methyl group.$3$. $Zn-Hg / HCl$ is the Clemmensen reduction reagent. It is acidic in nature. The secondary alcohol group is sensitive to acid and might undergo dehydration or other side reactions under these conditions.$4$. $(i) N_2H_4; (ii) \mathop O\limits^\Theta H, \Delta$ is the Wolff-Kishner reduction reagent. It is basic in nature. It selectively reduces the aldehyde (or ketone) group to a methyl (or methylene) group without affecting the alcohol group,which is stable under basic conditions.Therefore,the correct reagent is $(i) N_2H_4; (ii) \mathop O\limits^\Theta H, \Delta$.

Similar Questions

What is the product '$X$' in the following reaction?
(Image of $3-$formylcyclohexanone reacting with $[Ag(NH_3)_2]^+$)

The reactivity towards nucleophilic addition reaction of
$(I) HCHO$,
$(II) CH_3CHO$,
$(III) CH_3COCH_3$ is

Consider the following reaction,where:
$(A)$ The change in the functional group and
$(B)$ The corresponding change in the hybridization from the starting material to the final product are:
$CH_3-C \equiv N \xrightarrow[(ii) \ HI + \text{Red } P]{(i) \ SnCl_2, HCl / H_3O^{+}}$

Arrange the following compounds in the increasing order of their reactivity towards the nucleophilic addition of $HCN$:
$1. HCHO$
$2. CH_3COCH_3$
$3. PhCOCH_3$
$4. PhCOPh$

Identify the product $(A)$ and the name of the reaction for the given transformation:

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Similar Questions

What is the product '$X$' in the following reaction?(Image of $3-$formylcyclohexanone reacting with $[Ag(NH_3)_2]^+$)

The reactivity towards nucleophilic addition reaction of$(I) HCHO$,$(II) CH_3CHO$,$(III) CH_3COCH_3$ is

Consider the following reaction,where:$(A)$ The change in the functional group and$(B)$ The corresponding change in the hybridization from the starting material to the final product are:$CH_3-C \equiv N \xrightarrow[(ii) \ HI + \text{Red } P]{(i) \ SnCl_2, HCl / H_3O^{+}}$

Arrange the following compounds in the increasing order of their reactivity towards the nucleophilic addition of $HCN$:$1. HCHO$$2. CH_3COCH_3$$3. PhCOCH_3$$4. PhCOPh$