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A decarboxylative intramolecular aziridination reaction of alkene-tethered 4H-isoxazol-5-ones with a palladium/phosphine catalyst gave 1-azabicyclo[3.1.0]hex-2-enes in moderate to high yields (see scheme; dba=dibenzylideneacetone). The resulting N-fused bicyclic aziridines readily reacted with various reagents to afford ring-opening pyrroline derivatives.
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Okamoto et al. (2011) studied this question.
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