Sequential Claisen rearrangement and intramolecular Heck reaction as a route to medium-ring oxacycle-fused heterocycles.

[摘要]：A synthetic strategy based on tandem application of Claisen rearrangement and intramol. Heck reaction as key steps was developed for the synthesis of various hitherto unknown benzoxocine- and benzoxonine-fused coumarin and quinolone derivs.

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