One-pot relay of Staudinger–aza-Wittig and Pd-catalyzed [3+2] cycloaddition: modular pyrrolidinone synthesis via in situ generated isocyanates from CO₂

We report an operationally simple, one-pot relay strategy that combines the Staudinger–aza-Wittig reaction with a Pd-catalyzed (3+2) cycloaddition for the modular synthesis of pyrrolidinones from readily available azides, activated vinylcyclo-propanes,...