4<i>H</i>-1,2-Benzoxazines with Electron-Withdrawing Substituents on the Benzene Ring: Synthesis and Application as Potent Intermediates for Oxygen-Functionalized Aromatic Compounds
4H-1,2-benzoxazine rings functionalized with various electron-withdrawingsubstituents on the benzene ring. Furthermore, we also show that the resulting 4H-1,2-benzoxazines can be used as precursors of functionalized o-quinone methides and multisubstituted phenols. This type of heterocycle can be a potent intermediate to oxygen-fuctionalized aromatic compounds.