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STD 12 - 6. Haloalkanes and Haloarenes — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 6. Haloalkanes and Haloarenes4 Marks
MCQ
Among the followings which will readily undergo ${{S}_{{{N}^{2}}}}$ reaction ?
  • A
    $4-$ Chlorobut $-1-$ ene
  • B
    $1-$ Chlorobut $ -1-$ ene
  • ✓
    $1-$ Chlorobut $-2-$ ene
  • D
    $2-$ Chlorobut $- 1-$ ene
✓

Answer

Correct option: C.
$1-$ Chlorobut $-2-$ ene
c
Allylic halides are more reactive towards. ${{S}_{{{N}^{1}}}}$ and ${{S}_{{{N}^{2}}}}$ reaction

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  {{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} ||{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} ||{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } \\ 
  {H - O - S\mathop {{\text{ }} - }\limits^x {\mkern 1mu} S - O - H} 
\end{array}$

 $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,O\,\,\,\,\,} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,||} 
\end{array}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {HO - S\mathop - \limits^y S - OH} \\ 
  {\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}$

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