The correct order of S_N1 reactivity for the | vedclass

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

Question

(B) The reactivity of alkyl halides towards $S_N1$ reactions depends on the stability of the intermediate carbocation formed.$(I)$ $CH_3CH_2CH_2CH_2Br

Vedclass · Accepted Answer

$II > III > I$

Vedclass · Answer

(B) The reactivity of alkyl halides towards $S_N1$ reactions depends on the stability of the intermediate carbocation formed.$(I)$ $CH_3CH_2CH_2CH_2Br$ forms a primary $(1^{\circ})$ carbocation,$CH_3CH_2CH_2CH_2^+$,which is the least stable.$(II)$ $CH_2=CH-CH(Br)CH_3$ forms an allylic carbocation,$CH_2=CH-CH^+CH_3$,which is resonance-stabilized and thus the most stable.$(III)$ $CH_3CH_2CH(Br)CH_3$ forms a secondary $(2^{\circ})$ carbocation,$CH_3CH_2CH^+CH_3$,which is more stable than a primary carbocation but less stable than a resonance-stabilized allylic carbocation.Therefore,the order of stability of carbocations is $II > III > I$.Since $S_N1$ reactivity follows the order of carbocation stability,the correct order is $II > III > I$.

The correct order of $S_N1$ reactivity for the following compounds is:
$(I)$ $CH_3CH_2CH_2CH_2Br$
$(II)$ $CH_2=CH-CH(Br)CH_3$
$(III)$ $CH_3CH_2CH(Br)CH_3$

Similar Questions

$A$ $(C_{4}H_{8}Cl_{2})$ $\xrightarrow{\text{Hydrolysis at } 373 \text{ K}}$ $B$ $(C_{4}H_{8}O)$
$B$ reacts with hydroxylamine but does not give Tollen's test. Identify $A$ and $B$.

Haloalkanes react with $KCN$ to form alkyl cyanides as the main product,while $AgCN$ forms isocyanides as the chief product. Explain.

The major product of the following reaction is:

Explain the solubility of haloalkanes in water and organic solvents.

$MMPP \to$ Magnesium monoperoxyphthalate. Product $(X)$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The correct order of $S_N1$ reactivity for the following compounds is:$(I)$ $CH_3CH_2CH_2CH_2Br$$(II)$ $CH_2=CH-CH(Br)CH_3$$(III)$ $CH_3CH_2CH(Br)CH_3$