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REGIOSELECTIVE [3+2] CYCLOADDITION OF NITRILE OXIDES TO 1Н-PYRROLE-2,3-DIONES: SYNTHESIS OF SPIRO[PYRROLEDIOXAZOLES]

Анна А. Мороз, Максим В. Дмитриев, Андрей Н. Масливец
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Abstract


1,3-Dipolar cycloaddition of 1H-pyrrole-2,3-diones to nitrile oxides generated in situ from N-hydroxybenzimidoyl chlorides by the action of triethylamine proceeds regioselectively with the formation of 1,4,2-dioxazoles spiro-condensed with the pyrrol-2-one fragment.


Keywords


1,4,2-dioxazoles; 1,3-dipoles; nitrile oxides; 1H-pyrrole-2,3-diones; 1,3-dipolar cycloaddition.

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