Aqueous media carboxylative cyclization of propargylic amines with CO2 catalyzed by amphiphilic dendritic N-heterocyclic carbene–gold(I) complexes
摘要:
We prepared amphiphilic dendritic N-heterocyclic carbene (NHC)-gold(I) complexes having poly(ethylene glycol) units at the peripheral layer. By employing 1 mol % of the dendritic NHC-gold(I) catalyst, the aqueous media carboxylative cyclization of propargylic amines proceeded smoothly to provide the corresponding 2-oxazolidinone under atmospheric pressure of CO2 at room temperature. (c) 2014 Elsevier Ltd. All rights reserved.