Which of the following aldehydes will be most reactive towards nucleophiles?
Correct answer: C. Formaldehyde
- A. Benzaldehyde
- B. Acetaldehyde
- C. Formaldehyde
- D. Propanaldehyde
Explanation
Formaldehyde is the simplest aldehyde and is highly reactive towards nucleophiles. It has no electron-withdrawing groups attached to the carbonyl carbon, leading to a high electron density at the carbon atom, making it very susceptible to nucleophilic attack.
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About Nucleophilic Addition Reactions
Nucleophilic addition occurs at the polar carbonyl group of aldehydes and ketones, where a nucleophile attacks the electron-deficient carbon atom. Reactions with hydrogen cyanide, sodium bisulfite, alcohols and Grignard reagents are explained through tetrahedral intermediates, acid or base catalysis, and the different reactivity of aldehydes and ketones.
Practise Aldehydes and Ketones
679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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