Question Detail

CHM 102 General Chemistry II: Properties and Reactions of Ethers Objective Question

Question

What is the product when a Grignard reagent reacts with ethylene oxide, followed by acidic workup?
Options
A Primary alcohol with two additional carbons
B Primary alcohol with the chain extended by two carbons (RCH2CH2OH)
Correct Answer
C Secondary alcohol
D Tertiary alcohol
Correct Answer

Option B is the correct answer.

Detailed Explanation

RMgX + ethylene oxide → after workup: RCH2CH2OH. This adds a two-carbon chain (CH2CH2OH) to the Grignard reagent, giving a primary alcohol.

Hint

Epoxide ring-opening by Grignard.

Question Info