Carbonyl #1 - (Nucleophilic Addition)

Which of the following explains why hydrogen cyanide adds to propane but not to propene?

• The addition product formed with propene is not stable.

• Propanone is more susceptible to nucleophilic attack than propene.

• Propanone is more susceptible to electrophilic attack than propene.

Which of the following are correct statements about the reaction mechanism between an aldehyde and HCN, catalysed by NaCN?

• A new carbon-carbon bond is formed.

• In the intermediate, the oxygen carries a negative charge.

• The last stage involves the formation of a hydrogen-oxygen bond.

Which of the following compounds would react with HCN to give a product with a chiral center?

• CH₃CHO

• CH₃CH₂COCH₃

• CH₃COCH₃

• HCHO