Phosphorus-Containing Lewis Base Catalyzed Cascade Reactions of Isatin-Derived Oximes with Allenic Esters and Further Transformations

[摘要]：Phosphorus containing Lewis base catalyzed cascade reactions of isatin-derived oximes with allenic esters afford the corresponding functionalized nitrones. Further Lewis acid catalyzed highly regioselective intramolecular [3+2] cyclizations give the corresponding bridged cycloadducts. Moreover, a combined one-pot reaction is also feasible for the above two catalytic reactions.

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