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Post-Ugi Cyclization Approach for Transition Metal-Free Synthesis of Azetidine Derivatives Publisher



Yazzaf R1 ; Sayahi MH2 ; Mahdavi M3
Authors

Source: Tetrahedron Letters Published:2025


Abstract

A novel, metal-free strategy has been developed for the efficient synthesis of unique azetidine derivatives via a post-Ugi cyclization. This method involves generating 4-component Ugi adducts by reacting aldehydes, isocyanides, primary propargylamine, and 2-(phenylamino) benzoic acid. In the subsequent post-Ugi cyclization, azetidine derivatives are synthesized through a nucleophilic attack of a carbanion on the alkyne, followed by an intramolecular cyclization that forms a new carbon‑carbon bond. © 2025
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