Stepwise but potentially stereoselective intramolecular [2 + 2] cycloaddition of 2,6-diarylocta-1,6-dienes via a 1,4-cation radical intermediate
Abstract
2,6-Diarylocta-1,6-dienes E-and Z-1 undergo electron-transfer induced intramolecular [2 + 2] cycloaddition reactions to give bicycloheptanes endo- and exo-2 through a stepwise but potentially Stereoselective process.