Provide the Structure of the Product

Q17: Provide the structure of the major organic

Q18: Provide the structure of the diene and

Q19: Which of the following compounds is the

Q20: What are the structures of A,B,and C?

Q21: Give the 2 + 2 cycloaddition reaction

Q23: What is the major product of the

Q24: What pericyclic photochemical reaction can lead to

Q25: Show the mechanism for each of the

Q26: What diene and dienophile would react to

Q27: Provide the structure of the diene and