Which compound undergoes nucleophilic substit | vedclass

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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.

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

Similar Questions

The major product of the following reaction is:
$C_6H_5-CH_2-C(Br)(CH_3)-CH_2-CH_3 \xrightarrow[C_2H_5OH]{C_2H_5ONa}$

Which among the following halide$(s)$ will not show $S_{N}1$ reaction:
$(A)$ $H_2C=CH-CH_2Cl$
$(B)$ $CH_3-CH=CHCl$
$(C)$ $C_6H_5CH_2Cl$
$(D)$ $(CH_3)_2CHCl$
Choose the $most\ appropriate$ answer from the options given below:

The order of reactivity of the compounds $C_6H_5CH_2Br$,$C_6H_5CH(C_6H_5)Br$,$C_6H_5CH(CH_3)Br$ and $C_6H_5C(CH_3)(C_6H_5)Br$ in $S_N2$ reaction is

In which of the following compounds,the $C-Cl$ bond ionization shall give the most stable carbocation?

An organic halide is shaken with aqueous $NaOH$,followed by the addition of $dil. HNO_3$ and silver nitrate solution,which gives a white precipitate. The substance can be:

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