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Hydrohalogenation of Alkenes

In which of t...

Question

In which of the following reactions is a carbocation rearrangement possible?

(C H_{3})_{2} C H - C H = C H_{2} H C l, 0^{\circ} C - ---- \to

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(C H_{3})_{2} C H - C H = C H_{2} H B r, 0^{\circ} C - ----- \to

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P h - C H_{2} - C H = C H_{2} H B r - -- \to

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All of these

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Solution

The correct option is D All of these
But since, there is a $3^{0}$ carbon just next to carbon bearing +ve charge
$∴$ Rearrangement is possible.
In the exactly similar manner.
This also shows charge rearragement to form.
$∴$ Charge rearragement is possible in all three.
(d) is correct option.

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Similar questions

C H_{2} = C H - + C H_{2} and C H_{2} = C H - C H_{2} - + C H_{2}

C H_{3} - N H - + C H_{2} and + C H_{2} - O H

C H_{3} - O - C H_{2} - + C H_{2} and C H_{2} - O - + C H_{2}

C H_{3} - + C H - C H_{2} C H_{2} C H_{3} and C H_{3} C H_{2} - + C H - C H_{2} C H_{3}

C H_{3} - C H_{2} - \oplus C H_{2}

C H_{3} - C H | F - \oplus C H_{2}

C H_{3} - C H | B r - \oplus C H_{2}

C H_{3} - C H | C l - \oplus C H_{2}

C H_{2} = C H - C H = C H - \oplus N H_{3}

\oplus C H_{2} - C H = C H - ⊖ C H - \oplus N H_{3}

\oplus C H_{2} - C H = C H - C H = N H_{3}

C H_{2} = C H - C H = C H - + C H_{2}

C H_{2} = C H - + C H - C H = C H_{2}

C H_{2} = C H - + C H - - C H - + C H_{2}

+ C H_{2} - C H = C H - - C H - + C H_{2}

H_{2} C = C H - C H_{2} - + C H - C H_{3}

H_{3} C - C H_{3} | C | C H_{3} - + C H_{2}

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