Fig. 4From: Highlight selection of radiochemistry and radiopharmacy developments by editorial boardThe rapid and high-yield syntheses of unsymmetrical acyclic [11C]ureas under mild conditions (room temperature and within 7Â min) using no-carrier-added [11C]carbonyl difluoride with aliphatic and aryl amines are described. This new methodology is compatible with a range of functional groups and with both aliphatic amines and anilinesBack to article page