2026-05-05T19:48:23Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/214472021-06-24T07:42:25Zcom_10324_1187com_10324_931com_10324_894com_10324_28542com_10324_952col_10324_1408col_10324_28543

Pedrosa Sáez, Rafael Andrés García, José María Ávila, Deisy P. Ceballos, Miriam Pindado Hernández, Rodrigo Catalizadores Química orgánica Producción Científica 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. 2016-12-05 2016-12-05 2015 info:eu-repo/semantics/article Green Chemistry, 2015, vol.17, p. 2217-2225 1463-9262 http://uvadoc.uva.es/handle/10324/21447 10.1039/C4GC02474E 2217 17 2225 Green Chemistry eng http://pubs.rsc.org/ info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International Royal Society of Chemistry