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C ((sp³) -H funcionalizaciones de hidrocarburos ligeros utilizando la fotocatálisis en estado de decaturación en el

Gabriele Laudadio¹, Yuchao Deng^1,2,3, Klaas van der Wal¹

¹Micro Flow Chemistry and Synthetic Methodology, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, Netherlands.

Science (New York, N.Y.)

|July 8, 2020

Resumen

Este estudio introduce un método suave para la activación de enlaces inertes de hidrocarburos C ((sp3) -H utilizando la fotocatálisis en estado de descatálisis. Esto permite la síntesis de productos hidroalquilados valiosos en condiciones accesibles.

Área de la Ciencia:

Química orgánica
Fotocatálisis
Activación de C-H

Sus antecedentes:

La activación directa de hidrocarburos gaseosos es un desafío debido a su inercia.
Los métodos existentes a menudo requieren condiciones de reacción duras, lo que limita las aplicaciones sintéticas.

Objetivo del estudio:

Desarrollar una estrategia general y suave para la activación de enlaces C ((sp3) -H en alcanos.
Para permitir la síntesis de aductos hidroalquilados a través de radicales intermedios.

Principales métodos:

Utilizando el barato estado de descartado como un fotocatalizador.
Utilizando la transferencia de átomos de hidrógeno a temperatura ambiente.
Atrapar radicales generados centrados en el carbono con aceptores de Michael.

Principales resultados:

Activación exitosa de los enlaces C ((sp3) -H en el metano, el etano, el propano y el isobutano.
Formación de aductos hidroalquilados con buenos rendimientos aislados y alta selectividad.
Generalidad demostrada con 38 ejemplos.

Conclusiones:

El sistema fotocatalítico desarrollado proporciona una ruta suave y eficiente para la funcionalización de hidrocarburos.
Esta estrategia abre nuevas vías para la química orgánica sintética utilizando alcanos fácilmente disponibles.

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