Fill in the Empty Boxes

Q66: Consider the π molecular orbitals of pentadienyl

Q67: Under what conditions would a 1,3-hydrogen shift

Q68: Under thermal conditions,(2E,4E)-hexadiene undergoes a _ ring

Q69: Give the conditions for 1,5-hydrogen shifts.You may

Q70: What does LCAO stand for?

Q72: Give the product for the following reaction.

Q73: Under thermal conditions,(2E,4Z)-hexadiene undergoes a _ ring

Q74: What is the product of the following

Q75: Which of the following best explains the

Q76: What type of pericyclic process is occurring