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STD 11 - 9. Hydricarbon — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 9. Hydricarbon4 Marks
MCQ
The reaction    $C{H_3}CH = C{H_2}\mathop {\xrightarrow{{(CO + {H_2})}}}\limits_{{H^{^ + }}} C{H_3} - \mathop {\mathop {CH - C{H_3}}\limits_{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \,\,\,\,\,}\limits_{COOH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \,\,$is known as
  • A
    Wurtz reaction
  • ✓
    Koch reaction
  • C
    Clemmensen reduction
  • D
    Kolbe’s reaction
✓

Answer

Correct option: B.
Koch reaction
b
(b) Koch reaction : (Carboxylation of Alkene)

$C{H_3} - CH = C{H_2}\mathop {\xrightarrow{{{\text{Water gas (}}CO + {H_2})}}}\limits_{{{400}\,^o}C,{\kern 1pt} {H_3}P{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,COOH} \\ 
  {|\,\,\,\,} \\ 
  {C{H_3} - CH - C{H_3}} 
\end{array}}\limits_{Isobutyric\,acid} $

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