Question:

Ethylene oxide when treated with Grignard reagent yields :

Updated On: May 5, 2024
  • secondary alcohol
  • tertiary alcohol
  • cyclopropyl alcohol
  • primary alcohol
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The Correct Option is D

Solution and Explanation

When ethylene oxide (an epoxide) is treated with a Grignard reagent (RMgX), it undergoes a nucleophilic addition reaction. The Grignard reagent acts as a strong nucleophile, and it attacks the less hindered carbon atom of the epoxide ring, leading to the formation of a primary alcohol. 

So, the correct answer is (D) primary alcohol

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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