X=Y-ZH Systems As Potential 1,3-Dipoles. Part 33. Generation Of Nitrones From Oximes. Tandem Michael Addition-1,3-Dipolar Cycloaddition Reactions. Class 2 Processes In Which The Dipolarophile Is Located Within The Oxime.

Article abstract of DOI:10.1016/S0040-4020(01)87117-9

C-3, -4, -5, and -6-Alkenyl oximes react with electronegative olefins at the nitrogen atom via a Michael addition or ene-type process to generate the corresponding C-alkenyl nitrones which undergo an intramolecular cycloaddition.The cycloaddition can occu