endo-Selective (3+2) cycloaddition polymerizations of nitrone monomers with olefins utilising high pressure conditions

Bisnitrone: New Starting Material for Heterocyclic Poly(1,2,4-oxadiazolidin-5-one) via Polycycloaddition with Diisocyanate and Urethane Prepolymer

“…We have investigated the synthesis of polymeric nitrones, , the cross-linking of polynitrones , and the poly­(isoxazolidine) synthesis via polycycloaddition of bisnitrones with bismaleimides . Despite the wide range of known nitrone synthesis, − all bisnitrones, which were used in literature as monomers for poly­(isoxazolidine)­s with either bismaleimides or bisacrylates, − were prepared simply by condensation of dialdehydes with N -substituted hydroxylamines. However, although this is the most common synthesis, it is limited by the accessibility of the suitable hydroxylamines .…”