With which of the following will HBr react th | vedclass

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

Question

(A) The reaction of alcohols with $HBr$ proceeds via an $S_N1$ mechanism,which involves the formation of a carbocation intermediate. The rate of react

Vedclass · Accepted Answer

$2$-Methylpropan-$2$-ol

Vedclass · Answer

(A) The reaction of alcohols with $HBr$ proceeds via an $S_N1$ mechanism,which involves the formation of a carbocation intermediate. The rate of reaction depends on the stability of the carbocation formed. $2$-Methylpropan-$2$-ol is a tertiary $(3^{\circ})$ alcohol,which forms a stable tertiary carbocation. Propan-$2$-ol is a secondary $(2^{\circ})$ alcohol,while $2$-Methylpropan-$1$-ol and Propan-$1$-ol are primary $(1^{\circ})$ alcohols. Since the stability order of carbocations is $3^{\circ} > 2^{\circ} > 1^{\circ}$,the tertiary alcohol ($2$-Methylpropan-$2$-ol) will react the fastest.

With which of the following will $HBr$ react the fastest?

Similar Questions

Identify the organic product formed when ethylene glycol is heated with acidic potassium permanganate $(KMnO_4)$.

The order of reactivity of the following alcohols toward $HCl$ is:
$(1)$ $F-CH_2-CH_2-CH(OH)-CH_3$
$(2)$ $F-CH_2-CH_2-CH_2-CH(OH)-CH_3$
$(3)$ $CH_3-CH(OH)-CH_3$
$(4)$ $Ph-CH_2-CH_2-OH$

$PCC$ (Pyridinium chlorochromate) is a good reagent for which of the following transformations?

$4$-chloro-butan-$1$-ol $+ NaOH \to (B)$. The product $(B)$ of the above reaction is:

The reaction shown in the image proceeds by the $.......$ mechanism.
$CH_3CH_2CH(OH)CH_3 + SOCl_2 \rightarrow CH_3CH_2CH(Cl)CH_3 + SO_2 + HCl$

Vedclass Test Series

Exam Paper Generator

Online Exam Module