Abstract
An intramolecular nitrone-alkene cycloaddition involving in situ generated nitrones demonstrated reaction profiles different from those previously reported for pyrimidine system. Tuning the electron density of the benzene ring had a significant effect on cis/trans selectivity. These reactions were useful for the synthesis of novel tricyclic hexahydrobenzo[b]isoxazolo[3,4-f][1, 4]diazocin-4(1H)-ones and hexahydroisoxazolo[3,4-f]pyrido[3,2-b][1, 4]diazocin-4(1H)-one under mild reaction conditions in good yields
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