Explain Why the Following (2+2)cycloaddition Reaction Would Work Under Photochemical

Q11: (a)Under thermal conditions,will ring closure of (2E,4Z,6Z,8E)-decatetraene

Q12: How many nodes would you expect from

Q13: What is the product obtained from the

Q14: How would you synthesize the following compound

Q15: What is the major product of the

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