Carboxylative cyclization of propargylamines with carbamate salts as a non-gaseous CO2 source via dual-activation by Ag salts

Abstract 2-Oxazolidinones were synthesized from propargylamines using carbamate salts as the CO2 source. Ag catalysts act as activators for both alkynes and carbamate salts. This system also functions with aliphatic amines containing two or more nitrogen atoms by preparing carbamate salts in situ even under ambient conditions.