A) \[{{\text{H}}_{\text{3}}}\text{C}-\underset{\begin{smallmatrix} | \\ \text{OH} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}-}}}\,\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{3}}}\]
B) \[\underset{\begin{smallmatrix} | \\ \text{OH} \end{smallmatrix}}{\mathop{\text{C}{{\text{H}}_{\text{2}}}}}\,-\text{C}-\underset{\begin{smallmatrix} | \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}-}}}\,\text{C}{{\text{H}}_{\text{2}}}-\text{C}{{\text{H}}_{\text{3}}}\]
C) \[{{\text{H}}_{\text{3}}}\text{C}-\underset{\begin{smallmatrix} | \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}-}}}\,\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{OH} \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{3}}}\]
D) \[{{\text{H}}_{\text{3}}}\text{C}-\underset{\begin{smallmatrix} | \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}-}}}\,\text{C}{{\text{H}}_{2}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{OH} \end{smallmatrix}}{\mathop{\text{C}{{\text{H}}_{\text{2}}}}}\,\]
Correct Answer: A
Solution :
\[{{\text{H}}_{\text{3}}}\text{C}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{CH}\,\text{=}\,\text{C}{{\text{H}}_{\text{2}}}\xrightarrow[{}]{\text{H+}}\underset{{{2}^{o}}carbocation}{\mathop{{{\text{H}}_{\text{3}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}}}}\,-}}\,\overset{\text{+}}{\mathop{\text{C}}}\,\text{H}-\text{C}{{\text{H}}_{\text{3}}}\] \[{{\text{H}}_{\text{3}}}\text{C}-\underset{\begin{smallmatrix} {{\text{3}}^{\text{o}}}\,\text{carbocation} \\ \text{(more}\,\text{stable)} \end{smallmatrix}}{\mathop{\underset{+}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}}}}\,-\underset{\begin{smallmatrix} | \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ | \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{C}{{\text{H}}_{\text{3}}}}}\,\xrightarrow[{}]{{{\text{H}}_{\text{2}}}\text{\ddot{O}:}}\]You need to login to perform this action.
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