What carbonyl compound and Grignard reagent could be used to prepare 2-butanol?

Question

Quizplus · Accepted Answer

2-butanol has the structure CH3CH2CH(OH)CH3. In order to prepare it using a Grignard reagent, we would need a carbonyl compound that has a carbonyl group (C=O) adjacent to a CH3CH2 group. This means that we can choose either propanal or acetone, as both have this structure.

I. Propanal + Grignard reagent CH3CH2MgBr -> CH3CH2CH(OH)CH3

II. Acetone + Grignard reagent CH3MgBr -> CH3CH(OH)CH3

Since both propanal and acetone can react with a Grignard reagent to form 2-butanol, the answer is D) Only I and II.

What Carbonyl Compound and Grignard Reagent Could Be Used to Prepare