ChemInform Abstract: Cycloadditions of 6H‐1,3,4‐Oxadiazin‐6‐ones (4,5‐Diaza‐α‐pyrones) . Part 13. Diels‐Alder Reactions with 6H‐1,3,4‐Oxadiazin‐6‐ones as Dienophile.

Abstract

other 6-membered heterocycles other 6-membered heterocycles (with 3 or more heteroatoms) R 0670 -178Cycloadditions of 6H-1,3,4-Oxadiazin-6-ones (4,5-Diaza-α-pyrones) . Part 13. Diels-Alder Reactions with 6H-1,3,4-Oxadiazin-6-ones as Dienophile. -The title compounds (I) and (IV) react as dienophiles with the dienes ( II) and (V) to afford the products (III) and (VI), respectively. An unexpected tricyclic compound (VIII) is obtained with the oxadiazinone (VII). X-Ray structure analyses establish the identity of (VIb) and ( VIII). -(FEINEIS, E.; SCHWARZ, H.; HEGMANN, J.; CHRISTL, M.; PETERS, E.-M.; PETERS, K.; VON SCHNERING, H. G.; Chem.