Question:

An unknown alcohol is treated with the Lucas reagent to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism?

Updated On: Jul 27, 2022
  • Tertiary alcohol by $S_N2$
  • Secondary alcohol by $S_N1$
  • Tertiary alcohol by $S_N1$
  • Secondary alcohol by $S_N2$
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The Correct Option is C

Solution and Explanation

In Lucas test, turbidity appears immediately with tertiary alcohol by $S_N 1$ mechanism
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Concepts Used:

Alcohols, Phenols, and Ethers

Alcohol is formed when a saturated carbon atom bonds to a hydroxyl (-OH) group. It is an organic compound that contains a hydroxyl functional group attached to a carbon atom.

Phenol is formed when the -OH group replaces the hydrogen atom in benzene. It is an organic compound in which a hydroxyl group directly attaches to an aromatic hydrocarbon.

Ether is formed when oxygen atom bonds to two alkyl or aryl groups. It is an organic compound that has an oxygen atom that is connected to two aryl and alkyl groups.

Read More: Alcohol, Phenol, and Ethers