JEE Main · ChemistryHard

$What is the product of the reaction between cyclohexanol and concentrated H_{2} SO_{4} at 443 K ?$

A. $C_{6} H_{11} OSO_{3} H$
B. $C_{6} H_{10}$
C. $C_{6} H_{11} OC_{6} H_{11}$
D. $C_{6} H_{12}$

Show correct answer & step-by-step solution

Correct answer: B — $C_{6} H_{10}$

Solution

$Cyclohexanol is protonated by H_{2} SO_{4} to form an alkyloxonium ion.$
$Water is eliminated to form a cyclohexyl carbocation.$
$A proton is removed from the adjacent carbon to form a double bond.$
$The product is cyclohexene.$
$Hence the answer is (B).$

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