Problems and exercisesCarbonyl Addition

1. Products

1. Benzaldehyde + CH₃NH₂
2. Acetone + hydroxylamine (NH₂OH)
3. Cyclohexanone + pyrrolidine (secondary amine)
4. Acetaldehyde + excess hydrazine

2. The optimum pH

Imine formation is fastest at pH ≈ 4-5. Why is it slower in strongly acidic and in basic media?

3. Hydrolysis

What is obtained when the N-ethylimine of butanone is treated with water and dilute acid? Why?