Write the structures of the products you would expect to get if you react N-cinnamaldehyde-m-nitroaniline with catalytic hydrogenation (that means adding H2 and Pt or Pd). The optimal pH for condensing an amine with a carbonyl group to create an imine is pH = 5-6. a. Show a predicted reaction mechanism using curved arrows to show how this reaction occurs. b. If the pH were higher, which steps would be more difficult? Explain. c. If the pH were lower, which steps would be more difficult? Explain.