MCQ
The alcohol which easily reacts with conc. $HCl $ is
- A$C{H_3} - CHOH - C{H_2} - C{H_3}$
- ✓${(C{H_3})_3} - C - OH$
- C$C{H_3} - C{H_2} - C{H_2} - C{H_2} - OH$
- D${(C{H_3})_3} - CH - C{H_2}OH$
✓
Answer
Correct option: B.
${(C{H_3})_3} - C - OH$
b
(b)Tertiary alcohol readily reacts with halogen acid
(b)Tertiary alcohol readily reacts with halogen acid
$\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\, \downarrow }
\end{array}} \\
{C{H_3} \to C - OH} \\
{\,\,\,\,\, \uparrow } \\
{\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$ $ \to $ $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,C{H_3}} \\
|
\end{array}\,\,\,} \\
{C{H_3} - {C^ + } + O{H^ - }} \\
{|\,\,\,\,} \\
{\,\,C{H_3}}
\end{array}$
Presence of $3$ alkyl group increases electron density on ${3^o}$ carbon atom.
Hence $ - OH$ group is easily removed.
After the removal of $ - OH$ group ${3^o}$ carbonium ion is formed which is most stable
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