2026-04-28T19:30:34Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/593132025-02-20T07:16:58Zcom_10324_28542com_10324_952com_10324_894col_10324_28543

Vargas Rodríguez, Emily Esteban Hernández, Isabel Noelia Cencerrero, J. Francés, V. Álvarez, Cristina Miguel García, Jesús Ángel Gallardo, Alberto Lozano, Ángel E. Cid, María Belén 2023-04-25T08:58:37Z 2023-04-25T08:58:37Z 2022 Materials Today Chemistry, 2022, Vol. 24, 100966 2468-5194 https://uvadoc.uva.es/handle/10324/59313 10.1016/j.mtchem.2022.100966 100966 Materials Today Chemistry 24 Producción Científica A new set of catalytic materials having a pyrrolidine moiety confined in microporous organic polymer networks (POPs) has been attained. These catalytic polymers have been prepared by a straightforward synthesis starting from microporous polymer networks made from isatin (or a mixture of isatin and trifluoroacetophenone) and 1,3,5-triphenylbenzene. The polymers efficiently catalyzed the formation of nitrones under very mild and sustainable conditions using green solvents through an iminium ion activation mechanism. The reactions are scalable, and polymers are easily recycled. Special attention has been paid to understanding all the factors that could affect the efficiency of the confined catalysts. The electronic and conformational characteristics of the pyrrolidine moiety attached to the porous polymers, as well as other features that could affect the transport through the network, such as molecular volume and shape of reactants and products, and even hydrophilic or hydrophobic properties, have been systematically evaluated. In addition, the heterogeneous polymers are also useful in Cdouble bondC bond formation through both iminium ion and enamine activation. Gobierno de España (Agencia Estatal de Investigación) - (Projects CTQ2016-78779-R, PID2019-109403RB-C22, RTI2018-096328-B-I00, CTQ2017-89217-P and PID2020-118547GBI00) Junta de Castilla y León, Unión Europea y Fondo Europeo de Desarrollo Regional (FEDER) - (Project VA224P20)) application/pdf eng Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2022 The Authors Atribución 4.0 Internacional Polymers Polimeros y polimerización Porous materials Catalysis Solvents Green chemistry Pyrrolidine confined catalysts Pyrrolidine-based catalytic microporous polymers in sustainable C=N and C=C bond formation via iminium and enamine activation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S2468519422001951?via%3Dihub SI