Cyanuric Acid‐Based Organocatalyst for Utilization of Carbon Dioxide at Atmospheric Pressure

Abstract A organocatalytic system based on economical and readily available cyanuric acid has been developed for the synthesis of 2‐oxazolidinones and quinazoline‐2,4(1 H ,3 H )‐diones from propargylamines and 2‐aminobenzonitriles under atmospheric pressure carbon dioxide. Notably, a low concentration of carbon dioxide in air was directly converted into 2‐oxazolidinone in excellent yields without an external base. Through mechanistic investigation by in situ FTIR spectroscopy, cyanuric acid was demonstrated to be an efficient catalyst for carbon dioxide fixation.