Which of the following gives most stable carbocation by dehydration?

Question

Which of the following gives most stable carbocation by dehydration? (A) (C H3)2 C H-O H (B) ( CH 3)3 C - OH (C) CH 3- CH 3- OH (D) CH 3- CH 2- O - CH 2- CH 3

Tardigrade Admin · Accepted Answer

The stability of carbonium ion follows the order 3°>2°>1° Tertiary alcohol gives tertiary butyl carbonium ion on dehydration. ( CH 3)3 C - OH longrightarrow ( CH 3)3 C ++ OH -

Q. Which of the following gives most stable carbocation by dehydration?

$(C H_{3})_{2} C H - O H$

$(C H_{3})_{3} C - O H$

$C H_{3} - C H_{3} - O H$

$C H_{3} - C H_{2} - O - C H_{2} - C H_{3}$

The stability of carbonium ion follows the order $3^{\circ} > 2^{\circ} > 1^{\circ}$
Tertiary alcohol gives tertiary butyl carbonium ion on dehydration.
$(C H_{3})_{3} C - O H ⟶ (C H_{3})_{3} C^{+} + O H^{-}$

Q. Which of the following gives most stable carbocation by dehydration?

(CH3​)2​CH−OH

(CH3​)3​C−OH

CH3​−CH3​−OH

CH3​−CH2​−O−CH2​−CH3​

The stability of carbonium ion follows the order 3∘>2∘>1∘ Tertiary alcohol gives tertiary butyl carbonium ion on dehydration. (CH3​)3​C−OH⟶(CH3​)3​C++OH−

$(C H_{3})_{2} C H - O H$

$(C H_{3})_{3} C - O H$

$C H_{3} - C H_{3} - O H$

$C H_{3} - C H_{2} - O - C H_{2} - C H_{3}$

The stability of carbonium ion follows the order $3^{\circ} > 2^{\circ} > 1^{\circ}$
Tertiary alcohol gives tertiary butyl carbonium ion on dehydration.
$(C H_{3})_{3} C - O H ⟶ (C H_{3})_{3} C^{+} + O H^{-}$