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Los sitios de cobalto único vecinos de nitrógeno permiten la catálisis de tipo oxidasa heterogénea

Qi Zhang^1,2, Mi Peng³, Zirui Gao³

¹Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200438, China.

Journal of the American Chemical Society

|February 9, 2023

Resumen

Los investigadores desarrollaron un sistema biomimético inorgánico con pares de cobalto y nitrógeno que imitan las enzimas oxidasa. Este sistema permite la síntesis eficiente de más de 100 valiosos compuestos O-siliados utilizando oxígeno e hidrosilano.

Área de la Ciencia:

Catálisis
Química biomimética
Ciencias de los materiales

Sus antecedentes:

El desarrollo de enzimas artificiales que imiten la actividad de la oxidasa natural es crucial para la química sintética.
Los sistemas biomiméticos actuales a menudo luchan para lograr reacciones no naturales o requieren condiciones duras.

Objetivo del estudio:

Para crear un sistema catalizador biomimético robusto y totalmente inorgánico que imite las enzimas oxidasa.
Para demostrar su aplicación en la síntesis de valiosos compuestos O-siliados a través de la oxidación aeróbica.

Principales métodos:

Se ha diseñado un sistema biomimético con pares de sitio monocobalto/sitio piridínico-N (Co-N4/Py-N) vecinos del nitrógeno.
Utilizó este sistema como un imitador de la oxidasa para acoplar la reducción de oxígeno con las transformaciones químicas.
Se aplicó la plataforma para la oxidación aeróbica del hidrosilano en condiciones ambientales.

Principales resultados:

Se demostró con éxito una imitación cooperativa de la oxidasa utilizando el sistema Co-N4/Py-N.
Se ha logrado la síntesis escalable de más de 100 compuestos O-siliados industrialmente y farmacéuticamente relevantes (silanolos, borasiloxanos, éteres de sililo).
Se ha demostrado una oxidación aeróbica sin precedentes de hidrosilano en condiciones ambientales.

Conclusiones:

El sistema biomimético inorgánico desarrollado imita efectivamente las enzimas oxidasa para aplicaciones sintéticas.
Esta plataforma ofrece una nueva ruta para sintetizar diversos compuestos O-siliados y amplía el alcance de la síntesis enzimática artificial.
La estrategia proporciona información sobre las enzimas redox y abre caminos para nuevos materiales biomiméticos.

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