RT info:eu-repo/semantics/article T1 Chiral Ureas and Thioureas Supported on Polystyrene for Enantioselective Aza-Henry Reaction in Solvent-free conditions A1 Pedrosa Sáez, Rafael A1 Andrés García, José María A1 Ávila, Deisy P. A1 Ceballos, Miriam A1 Pindado Hernández, Rodrigo K1 Catalizadores K1 Química orgánica AB Novel bifunctional ureas and thioureas inmovilized on sulfonylpystyrene have been prepared as recoverable and reusable organocatalysts and used in the stereoselective aza-Henry reaction under solvent-free conditions. The activity and stereoselection of the catalysts are dependent on the length of the tether bringing the active site and the polymer, being the catalyst derived from 1,6-hexane diamine the best one. It has been also demonstrated that the supported catalysts are more effective than the homologous soluble catalysts. PB Royal Society of Chemistry SN 1463-9262 YR 2015 FD 2015 LK http://uvadoc.uva.es/handle/10324/21447 UL http://uvadoc.uva.es/handle/10324/21447 LA eng NO Green Chemistry, 2015, vol.17, p. 2217-2225 NO Producción Científica DS UVaDOC RD 24-nov-2024