CH_{3}CH_{2}CN xrightarrow[Ether]{CH_{3}MgBr} | vedclass

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

Question

(A) $1$. The reaction of $CH_{3}CH_{2}CN$ (propanenitrile) with $CH_{3}MgBr$ (Grignard reagent) followed by acid hydrolysis $(H_{3}O^{+})$ yields a ke

Vedclass · Accepted Answer

$CH_{3}CH_{2}CH_{2}CH_{3}$

Vedclass · Answer

(A) $1$. The reaction of $CH_{3}CH_{2}CN$ (propanenitrile) with $CH_{3}MgBr$ (Grignard reagent) followed by acid hydrolysis $(H_{3}O^{+})$ yields a ketone,$B$,which is butan$-2-$one $(CH_{3}CH_{2}COCH_{3})$.$2$. The reaction is: $CH_{3}CH_{2}CN + CH_{3}MgBr$ $\rightarrow CH_{3}CH_{2}C(NMgBr)CH_{3}$ $\xrightarrow{H_{3}O^{+}} CH_{3}CH_{2}COCH_{3}$ $(B)$.$3$. The subsequent step is the Clemmensen reduction,which uses $Zn-Hg/HCl$ to reduce the carbonyl group $(C=O)$ of the ketone to a methylene group $(-CH_{2}-)$.$4$. Therefore,$CH_{3}CH_{2}COCH_{3} \xrightarrow[HCl]{Zn-Hg} CH_{3}CH_{2}CH_{2}CH_{3}$ ($C$,butane).

$CH_{3}CH_{2}CN$ $\xrightarrow[Ether]{CH_{3}MgBr} A$ $\xrightarrow{H_{3}O^{+}} B$ $\xrightarrow[HCl]{Zn-Hg} C$
The correct structure of $C$ is

Similar Questions

Which one of the following compounds is the best choice for being prepared by an efficient mixed aldol addition reaction?

Identify the major product $(P)$ in the given reaction of propanal with dilute $NaOH$ followed by heating.

The total number of structural products formed in the following reaction sequence is $CH_3COCl \xrightarrow{i) (CH_3)_2Cd} (P)$; $(P) + CH_3CHO \xrightarrow{ii) NaOH (aq.), \Delta} ?$

Which of the following reactions is not an example of a nucleophilic addition-elimination reaction?

What will be the product $S$ in the following reaction?
$CH_3COOH$ $\xrightarrow{SOCl_2} P$ $\xrightarrow[Anhyd. AlCl_3]{Benzene} Q$ $\xrightarrow{HCN} R$ $\xrightarrow{HOH} S$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$CH_{3}CH_{2}CN$ $\xrightarrow[Ether]{CH_{3}MgBr} A$ $\xrightarrow{H_{3}O^{+}} B$ $\xrightarrow[HCl]{Zn-Hg} C$The correct structure of $C$ is