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Acceso enantioselectivo a los espirolactamos a través de la transferencia de nitrenoides habilitado por interacciones

Euijae Lee^1,2, Yeongyu Hwang^1,2, Yeong Bum Kim^1,2

¹Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea.

Journal of the American Chemical Society

|April 22, 2021

Resumen

Este estudio introduce un nuevo método catalizado por iridio para crear espirolactamos quirales. Un nuevo auxiliar mejora las interacciones catalizador-sustrato, lo que permite un estereocontrol preciso en la síntesis enantioselectiva.

Área de la Ciencia:

Química orgánica
Catálisis
Síntesis asimétrica

Sus antecedentes:

Los espirolactamos quirales son motivos estructurales importantes en los productos farmacéuticos.
El desarrollo de vías sintéticas enantioselectivas eficientes sigue siendo un desafío.

Objetivo del estudio:

Desarrollar un método catalizado por iridio para la síntesis enantioselectiva de espirolactamos quirales.
Para lograr un control estéreo preciso a través de interacciones mejoradas entre catalizador y sustrato.

Principales métodos:

Reacción de transferencia de nitrenoides catalizada por el iridio.
Utilizando un auxiliar O-silílico sin rastros.
Utilizando sustratos de 1,4,2-dioxazol-5-one derivados del arenol.

Principales resultados:

Síntesis enantioselectiva exitosa de los productos quirales de espirolactam.
Se ha demostrado un control estéreo preciso mediante interacciones secundarias mejoradas.
El auxiliar O-silyl diferenciaba efectivamente las caras procirales de los sustratos.

Conclusiones:

El método desarrollado proporciona un acceso eficiente a los valiosos espirolactamos quirales.
La estrategia de mejorar las interacciones secundarias es clave para el control estéreo.
Este trabajo ofrece una nueva vía para la síntesis asimétrica.

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