1,3-Dipolar Cycloaddition of 3-Amino Oxindole-Based Azomethine Ylides and O-Vinylphosphonylated Salicylaldehydes for Diastereoselective Synthesis of Oxindole Spiro-P,N-polycyclic Heterocycles

Tiao Huang,Li Liu,Qinghe Wang,Mingshu Wu,Dulin Kong

SYNTHESIS-STUTTGART（2020）

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摘要

An efficient stereoselective assembly strategy for the construction of pyrrolidin-2,3 '-oxindole cis-fused phosphadihydrocoumarins was established. The process involves the condensation of O-vinylphosphonylated salicylaldehydes and 3-amino oxindoles followed by intermolecular cycloaddition with high diastereoselectivity and atom economy.

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关键词

3-amino oxindole,azomethine ylide,dipolar cycloaddition,pyrrolidin-2,3 '-oxindoles,cis-fused phosphadihydrocoumarins,O-vinylphosphonylated salicylaldehyde

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