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C ((sp²) -H Hidroxilación por medio de la Migración catalítica del 1,4-Ni con N₂O

Huihui Zhang^1,2, Jesus Rodrigalvarez¹, Ruben Martin^1,3

¹Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.

Journal of the American Chemical Society

|August 2, 2023

Resumen

Este estudio introduce una nueva hidroxilación C-H catalizada por níquel de bromuros de arilo utilizando óxido nitroso. El método proporciona una nueva vía para obtener compuestos valiosos que contienen oxígeno mediante la reutilización de sustancias peligrosas.

Área de la Ciencia:

Química orgánica
Catálisis
Metodología sintética

Sus antecedentes:

Los haluros de arilo son intermediarios sintéticos muy versátiles.
La funcionalización eficiente de C-H sigue siendo un desafío clave en la síntesis orgánica.
El óxido nitroso (N2O) es una fuente abundante y barata de oxígeno.

Objetivo del estudio:

Desarrollar una nueva hidroxilación de bromuros de arilo catalizada por el níquel C ((sp2) -H.
Para utilizar el óxido nitroso como un donante de átomos de oxígeno sostenible.
Para lograr la difuncionalización regioselectiva de los bromuros de arilo.

Principales métodos:

Reacción catalizada por níquel de los bromuros de arilo con el N2O.
Utilizando un mecanismo de translocación de 1,4-Ni.
Utilizando la selección de la columna vertebral del ligando para el regiocontrol.

Principales resultados:

Se ha producido con éxito la hidroxilación C(sp2)-H de bromuros de arilo.
Formación de productos difuncionalizados ipso/ortho.
Acceso a los derivados de carbonilo o fenol basados en la elección del ligando.

Conclusiones:

Una nueva vía sintética catalizada por Ni para compuestos que contienen oxígeno.
Demostración de la regioselectividad y el estereocontrol a través del diseño del ligando.
Potencial para la reutilización de sustancias peligrosas en bloques de construcción valiosos.

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