Which compound undergoes nucleophilic substit | vedclass

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

Question

(A) The reaction with $NaCN$ typically proceeds via the $S_N2$ mechanism,as $CN^-$ is a strong nucleophile.The rate of $S_N2$ reaction is inversely pr

Vedclass · Accepted Answer

$CH_3CH_2CH_2CH_2Br$

Vedclass · Answer

(A) The reaction with $NaCN$ typically proceeds via the $S_N2$ mechanism,as $CN^-$ is a strong nucleophile.The rate of $S_N2$ reaction is inversely proportional to the steric hindrance at the reaction center.The order of reactivity for $S_N2$ is: primary $(1^\circ)$ > secondary $(2^\circ)$ > tertiary $(3^\circ)$.Comparing the given compounds:$(A)$ $CH_3CH_2CH_2CH_2Br$ is a primary alkyl halide $(1^\circ)$.$(B)$ $CH_3CH_2CH(CH_3)Br$ is a secondary alkyl halide $(2^\circ)$.$(C)$ $(CH_3)_2CHCH_2Br$ is a primary alkyl halide $(1^\circ)$,but it has steric hindrance at the $\beta$-carbon.$(D)$ $CH_3CH_2C(CH_3)_2Br$ is a tertiary alkyl halide $(3^\circ)$.Among the primary halides,$CH_3CH_2CH_2CH_2Br$ has the least steric hindrance at the reaction center,making it the fastest to undergo $S_N2$ substitution.

List-$I$ (Reagent)	List-$II$ (Product)
$A$. $KOH$ (alc)	$I$. Nitrile
$B$. $KCN$ (alc)	$II$. Ester
$C$. $AgNO_2$	$III$. Alkene
$D$. $CH_3COOAg$	$IV$. Nitroalkane

Which compound undergoes nucleophilic substitution with $NaCN$ at the fastest rate?

Similar Questions

Match List-$I$ with List-$II$.
$1$-Bromopropane is reacted with reagents in List-$I$ to give products in List-$II$.

List-$I$ (Reagent) List-$II$ (Product)

$A$. $KOH$ (alc) $I$. Nitrile

$B$. $KCN$ (alc) $II$. Ester

$C$. $AgNO_2$ $III$. Alkene

$D$. $CH_3COOAg$ $IV$. Nitroalkane

Nitrochloroform (Chloropicrin) is prepared by the action of chloroform and:

Which of the following compounds will not produce a precipitate on reaction with $AgNO_3$?

The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is:

Which among the following is most reactive via $S_N2$ mechanism?

Vedclass Test Series

Exam Paper Generator

Online Exam Module