Which of the following statements about photochemical electrocyclic reactions isnot true?
A) Photochemical electrocyclic reactions occur in a disrotatory fashion for a conjugated polyene with an even number ofp bonds.
B) Photochemical electrocyclic reactions occur in a conrotatory fashion for a conjugated polyene with an odd number ofp bonds.
C) In photochemical reactions, we consider the orbitals of the HOMO of the excited state to determine the course of the reaction.
D) In photochemical reactions, we consider the orbitals of the LUMO of the excited state to determine the course of the reaction.
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