Which one of the Grignard reactions below could give rise to CH3CH3CH(OH)CH2CH3?
Correct answer: C. Propanaldehyde and ethyl Grignard
- A. Propane and methyl Grignard
- B. Methyl ethyl ketone and methyl
- C. Propanaldehyde and ethyl Grignard
- D. None of these
Explanation
The addition of Grignard reagent to aldehydes leads to the production of secondary alcohol, and the addition of ketone leads to the production of tertiary alcohol. As the alcohol produced in the question is secondary, the correct option would be the one with the reaction of aldehyde with grignard reagent, hence option C.Option A is incorrect as alkanes do not directly react with grignard to form alcohol; grignard reacts with alcohol to produce alkane.Option B is incorrect, as with ketone, a tertiary alcohol is formed, which is not the case in the question.
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About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
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