MCQ
An alkyl halide may be converted into an alcohol by
- AElimination
- BAddition
- ✓Substitution
- DDehydrohalogenation
✓
Answer
Correct option: C.
Substitution
c
Alkyl halides on alkaline hydrolysis get converted into alcohols. This takes place by a nucleophilic substitution reaction where the $- X$ atom is substituted by a nucleophile i.e-$OH$ group.
Alkyl halides on alkaline hydrolysis get converted into alcohols. This takes place by a nucleophilic substitution reaction where the $- X$ atom is substituted by a nucleophile i.e-$OH$ group.
The primary alkyl halides undergo nucleophilic substitution reaction by $S _{ N } 2$ mechanism, while tertiary alkyl halides follow $S _{ N } 1$ mechanism.
$R - X + KOH \rightarrow R - OH + KX$
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$\begin{array}{*{20}{c}}
{C{H_3} - CH - C{H_3}\xrightarrow{{PB{r_3}}}X\xrightarrow{{{\text{Mg/ether}}}}Y\,\xrightarrow{{{{\text{H}}_2}{\text{O/}}{{\text{H}}^ + }}}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
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→{C{H_3} - CH - C{H_3}\xrightarrow{{PB{r_3}}}X\xrightarrow{{{\text{Mg/ether}}}}Y\,\xrightarrow{{{{\text{H}}_2}{\text{O/}}{{\text{H}}^ + }}}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$ The final product is
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→|
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Which of the following will not give Hoffmann bromamide reaction ?
Which is a reducing sugar
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→