Hydrogenation of carboxylic esters catalyzed by manganese catalysts supported by bidentate NHC-phosphine ligands

A series of bidentate manganese complexes with a general structure [(κ2C,P-R2PCH2CH2-NHC)Mn(CO)3Br] (NHC = N-substituted imidazolylidene) was prepared and fully characterized. These complexes were proven to be efficient catalysts for the hydrogenation of carboxylic ester derivatives with a low catal...

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Detalles Bibliográficos
Autores: Azouzi, Karim, Pointis, Romane, Buhaibeh, Ruqaya, Hermosilla Fernández, Pablo, Pedussaut, Lucie, Boundor, Mohamed, Bonfiglio, Anna, Bruneau-Voisine, Antoine, Wei, Duo, Roisnel, Thierry, Duhayon, Carine, Casado, Miguel Ángel, Valyaev, Dmitry A., Canac, Yves, Bastin, Stéphanie, Raynaud, Christophe, Sortais, Jean-Baptiste
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2024
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:132217
Acceso en línea:http://zaguan.unizar.es/record/132217
Access Level:acceso abierto
Descripción
Sumario:A series of bidentate manganese complexes with a general structure [(κ2C,P-R2PCH2CH2-NHC)Mn(CO)3Br] (NHC = N-substituted imidazolylidene) was prepared and fully characterized. These complexes were proven to be efficient catalysts for the hydrogenation of carboxylic ester derivatives with a low catalyst loading (0.5 mol%) in 2-Me-THF at 100 °C in the presence of KHBEt3. The generality of this hydrogenation was exemplified with more than 25 substrates. Experimental and computational investigations allowed to propose a rational mechanism involving an anionic tricarbonyl manganese hydride complex as the active species.