Which at following can be prepared by the reaction of Grignard reagent with aldehydes?
Correct answer: C. Alcohols
- A. Ketones
- B. Hydrocarbons
- C. Alcohols
- D. Ethers
Explanation
Grignard reagent,R-Mg-X, reacts with carbonyl group in aldehydes to give secondary alcohols with the exception of methanal which gives primary alcohol and with carbonyl group in ketones to give tertiary alcohols.
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About Reactivity of Aldehydes and Ketones
The polar carbonyl group makes aldehydes and ketones undergo nucleophilic addition, reduction and condensation reactions. Aldehydes are generally more reactive and oxidise readily to carboxylic acids, whereas ketones resist mild oxidation; reactions with hydrogen cyanide, sodium bisulfite and 2,4-DNP help identify their behaviour.
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