Abstract

AbstractCopper‐catalyzed sequential 1,3‐dipolar cycloadditions of azomethine imines and alkynes and electrophilic thiolations are described. The C−S, C−N, and C−C bonds were simultaneously formed in one pot, leading to N,N‐bicyclic pyrazolidinones in good to excellent yields. The process is proposed to proceed via reaction of a cuprate pyrazolidinonate intermediate and benzenesulfonothioate.magnified image

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