Phosphine-Catalyzed Domino Reaction of Thioaurones and Allenoate: Synthesis of Benzothiophene-Fused Dioxabicyclo[3.3.1]nonane Derivatives
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The reaction of thioaurone derivatives with allenoate catalyzed by tris(4-methoxyphenyl)phosphane (P(4-MeOC6H4)3) resulted in a domino annulation reaction to produce a benzothiophene-fused bridged bicyclic ring, with 40–91% yields. The advantages of the methodology include diastereoselective formation of a bridged bicyclic ring in a single step, very mild reaction conditions, and success resulting from a broad functional group. The proposed mechanism was tested and supported by DFT calculations.
创建时间：
2018-05-02
