Weak nucleophiles, such as ammonia derivatives (), often require a weakly acidic medium to react with carbonyl compounds. What is the primary mechanistic role of this acid catalyst?

Question

Weak nucleophiles, such as ammonia derivatives ($NH_3-Z$), often require a weakly acidic medium to react with carbonyl compounds. What is the primary mechanistic role of this acid catalyst?

Prashant Kotian · Accepted Answer

Correct answer: C. Weak nucleophiles lack the electron density to attack the neutral carbonyl carbon quickly. The acid catalyst protonates the carbonyl oxygen, which drastically increases the partial positive charge () on the carbonyl carbon, making it highly susceptible to nucleophilic attack.

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