Atropisomerism-Induced Facial Selectivity in Nitrile Oxide Cycloadditions with 5-Methylenehydantoins

[摘要]：N-Aryl 5-methylenehydantoins underwent nitrile oxide cycloaddition with benzonitrile oxide to give 5-spiro isoxazoline adducts with complete regioselectivity. Atropisomerism around the N-aryl bond also led to facial selectivity in these cycloadditions.

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