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Un marco orgánico de metaloporfirina resistente a las bases para la halogenación de enlaces C-H

Xiu-Liang Lv¹, Kecheng Wang², Bin Wang¹

¹Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing 100124, PR China.

Journal of the American Chemical Society

|December 13, 2016

Resumen

Un nuevo marco metal-orgánico de porfirina resistente a las bases (MOF), PCN-602, demuestra una estabilidad excepcional y una actividad catalítica en soluciones básicas. Este robusto MOF es prometedor para las reacciones de halogenación de enlaces C-H, superando a los catalizadores tradicionales.

Área de la Ciencia:

Ciencias de los materiales
Catálisis
Química supramolecular

Sus antecedentes:

Las estructuras metálicas orgánicas (MOF) ofrecen propiedades ajustables para diversas aplicaciones.
El desarrollo de MOF robustos y estables en medios básicos sigue siendo un desafío importante.
Los MOF porfirínicos son de interés debido a su potencial catalítico.

Objetivo del estudio:

Construir un MOF porfirínico resistente a las bases con una mayor estabilidad.
Investigar el rendimiento catalítico del MOF en condiciones básicas.
Explorar el uso de los MOF porfirínicos como catalizadores reciclables en entornos difíciles.

Principales métodos:

Estrategia de síntesis reticular empleada para la construcción de MOF.
Caracterización de la estructura y estabilidad del MOF en diversas soluciones acuosas (hidróxido, fluoruro, carbonato, fosfato).
Evaluación de la actividad catalítica del Mn3+-porfirino MOF para la halogenación de enlaces C-H en un sistema básico.

Principales resultados:

Construcción exitosa de PCN-602, un MOF porfirínico de 12 conexiones.
El PCN-602 exhibe una robustez notable en soluciones de hidróxido y estabilidad en presencia de iones F, CO32 y PO43.
El Mn3+-porfirínico PCN-602 demuestra una alta actividad catalítica y reciclabilidad para la halogenación de enlaces C-H en un sistema básico, superando a los catalizadores homogéneos.

Conclusiones:

PCN-602 representa una nueva clase de MOF porfirínicos resistentes a las bases.
El estudio pone de relieve el potencial de los MOF porfirínicos como catalizadores eficientes y reciclables en medios básicos.
Este trabajo es pionero en el uso de MOF porfirínicos en soluciones básicas con aniones coordinadores para aplicaciones catalíticas.

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