High activities of nickel (II) complexes containing phosphorus-nitrogen ligands in hydrogen transfer reaction of imines using formic acid as a renewable hydrogen source
| Primer Autor |
Aguirre, Pedro
|
| Co-autores |
Letelier, K.
Parra-Melipan, S.
Negrete-Vergara, C.
Lopez, V.
Valdebenito, G.
Artigas, V.
Aranda, B.
Vega, A.
Moya, S. A.
|
| Título |
High activities of nickel (II) complexes containing phosphorus-nitrogen ligands in hydrogen transfer reaction of imines using formic acid as a renewable hydrogen source
|
| Editorial |
ELSEVIER
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| Revista |
MOLECULAR CATALYSIS
|
| Lenguaje |
en
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| Resumen |
The catalytic reduction of imines to obtain secondary amines is an important route in the synthesis of molecules of biological or pharmaceutical interest. A series of new nickel (II) complexes bearing phosphorous-nitrogen (P, N) or phosphorous-nitrogen-phosphorous (P,N,P) ligands were characterized and studied as catalysts in hydrogen transfer reaction of imines, using formic acid as a hydrogen source, while avoiding the use of molecular hydrogen (H2). The complexes, of general formula NiCl2(L), [Ni(L)2](CF3SO3)2 (in which L is a P,N ligand) and [NiCl(L)]Cl (in the case of a tridentate PNP ligand), were active catalysts in the imine hydrogen, with turnover frequencies (TOF) up to 373 h-1 with NiCl2L1 complex (L1 = 2-(diphenylphosphinoamino) pyridine) and Nbenzylideneaniline as substrate, while a [Ni(L)2](CF3SO3)2 complex bearing the same P,N ligand achieved a slightly lower activity (TOF = 320 h-1). Catalyst recyclability was also studied, achieving near full conversion after four cycles, with a total substrate/catalyst ratio of 1000:1.
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| Fecha Publicación |
2023
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| Tipo de Recurso |
artículo original
|
| doi |
10.1016/j.mcat.2023.113262
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| Formato Recurso |
PDF
|
| Palabras Claves |
Phosphorous -nitrogen ligands
Nickel(II) catalysts
Imine hydrogenation
Formic acid as a hydrogen source
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| Ubicación del archivo | |
| Categoría OCDE |
Química
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| Materias |
Ligandos fósforo-nitrógeno
Catalizadores de níquel (II)
Hidrogenación de iminas
El ácido fórmico como fuente de hidrógeno.
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| Identificador del recurso (Mandatado-único) |
artículo original
|
| Versión del recurso (Recomendado-único) |
versión publicada
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| Derechos de acceso |
metadata
|
| Access Rights |
metadata
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| Id de Web of Science |
WOS:001013219500001
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| ISSN |
2468-8231
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| Categoría WOS |
Química
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| Referencia del Financiador (Mandatado si es aplicable-repetible) |
UCH VID ENL 06/20
CNRS IRP 2022-2026
ANID-FONDECYT 3220321
ANID AFB220001
ANID FONDECYT 3220321
|
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