Identify the correct (increasing) order of reactivity of carbonyl compound towards nucleophilic addition:
Correct answer: D. CH₃COCH₃ < CH₃CH₂CHO < CH₃CHO < HCHO
- A. HCHO < CH₃CHO < CH₃COCH₃ < CH₃COCH₃
- B. CH₃CH₂CHO < CH₃COCH₃ < CH₃CHO < HCHO
- C. HCHO < CH₃COCH₃ < CH₃CH₂CHO < CH₃CHO
- D. CH₃COCH₃ < CH₃CH₂CHO < CH₃CHO < HCHO
Explanation
Methyl group is electron donating group hence decreases reactivity
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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.
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