MCQ
$2-$ chloro $-2-$ methylpentane on reaction with sodium methoxide in methanol yields :

$(1)\,\,\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,C{H_3}} \\ 
  | \\ 
  {{C_2}{H_5}C{H_2}C - OC{H_3}} \\ 
  | \\ 
  {\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(2)\,\,\begin{array}{*{20}{c}}
  {{C_2}{H_5}C{H_2}C = C{H_2}} \\ 
  {\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(3)\,\,\begin{array}{*{20}{c}}
  {{C_2}{H_5}CH = C - C{H_3}} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

  • $(3)$ only
  • B
    $(1)$ and $(2)$
  • C
    All of these
  • D
    $(1)$ and $(3)$

Answer

Correct option: A.
$(3)$ only
a
When ter - alky thalides are used in Willamson synination occurs rather than substitution resuting into formation af alkene. Here alkoxide jon abstract one of the $\beta$ hydrogen atom along with acting as a nucleophile.

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