Highly Diastereoselective Photooxygenation of Chiral 1,2- Dihydronaphthalenes: Evidence for a Common Intermediate in the Ene Reaction and the (4 + 2) Cycloaddition.

The photooxygenation of chiral 1,2-dihydronaphthalenes exhibits a very high degree of stereoselectivity, which provides evidence for a common intermediate with perepoxide geometry.