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Pd{\displaystyle Pd{\displaystyle Pd{\displaystyle Pd{\displaystyle Pd{\displaystyle

Zhe Zhuang¹, Jin-Quan Yu¹

¹Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.

Journal of the American Chemical Society

|July 2, 2020

Resumen

Este estudio introduce un nuevo método catalizado por el paladio para la funcionalización enantioselectiva C ((sp3) -H de aminas alifáticas libres. Este avance permite la síntesis de moléculas complejas a partir de aminas simples, ofreciendo una herramienta versátil para los químicos medicinales.

Área de la Ciencia:

Química orgánica
Catálisis
Metodología sintética

Sus antecedentes:

Las reacciones enantioselectivas dirigidas al sustrato son cruciales para crear estereocentros en la síntesis orgánica.
La funcionalización enantioselectiva C ((sp3) -H de los hidrocarburos es un desafío, especialmente para las aminas alifáticas libres tradicionalmente no reactivas.
El desarrollo de nuevos métodos para la funcionalización de aminas es vital para acceder a arquitecturas moleculares complejas.

Objetivo del estudio:

Desarrollar un nuevo método para la funcionalización enantioselectiva de las aminas alifáticas libres.
Para permitir la introducción de la complejidad molecular en las fracciones de hidrocarburos inertes a través de reacciones dirigidas por aminas.
Proporcionar una estrategia versátil para que los químicos farmacéuticos puedan sintetizar y modificar aminas biológicamente relevantes.

Principales métodos:

Utilizó un sistema de reacción catalizado por paladio.
Utilizó un ligando tioéter bidentado quiral diseñado específicamente.
Se han investigado los ciclos catalíticos en los que intervienen los intermediarios Pd (II) /Pd (IV) y Pd (II) /Pd (0).

Principales resultados:

Se ha logrado con éxito la funcionalización enantioselectiva de las ciclopropilmetilaminas (aminas alifáticas libres).
El ligando tioéter quiral facilitó la formación de un intermediario clave de mono (amin) -Pd (II), lo que permitió la activación de C-H.
Se ha demostrado una reactividad diversa que incluye reacciones de (hetero) arilación, carbonilación y olefinación.

Conclusiones:

Desarrolló una estrategia general y versátil para la funcionalización enantioselectiva de aminas alifáticas libres.
La nueva metodología proporciona un acceso eficiente a compuestos valiosos que contienen aminas.
Este enfoque ofrece un potencial significativo para el descubrimiento y desarrollo de fármacos a través de la síntesis rápida de moléculas biológicamente relevantes.

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