Question:

In which of the following compounds $ -OH $ group is least reactive?

Updated On: Jul 12, 2022
  • All are equally reactive.
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The Correct Option is A

Solution and Explanation

In salicylaldehyde, the $ -OH $ group is less reactive than in $m$-and $p$-isomers or benzyl alcohol due to chelation.
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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