Which of the following aldehydes does not give Cannizzaro's reaction?
Correct answer: D. Acetaldehyde
- A. Benzaldehyde
- B. Trimethyl acetaldehyde
- C. Formaldehyde
- D. Acetaldehyde
Explanation
The correct answer is D) Acetaldehyde. Acetaldehyde does not undergo the Cannizzaro's reaction due to the absence of a suitable electron-donating group attached to the carbonyl carbon, which is necessary for the reaction to proceed.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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