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Inserción atroposelectiva de un solo carbono catalizada por Rh

Bowen Li¹, Valero G Alfonso^1,2, Alessio Puggioli^1,2

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

Journal of the American Chemical Society

|July 7, 2025

Resumen

Los investigadores desarrollaron el primer método de inserción de un solo carbono enantioselectivo. Este nuevo proceso convierte a los indoles 3-arilo en valiosas quinolinas atropocirales, lo que hace avanzar la síntesis asimétrica.

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Área de la Ciencia:

Química orgánica
Síntesis asimétrica
Catálisis

Sus antecedentes:

Las reacciones de inserción de un solo carbono son cada vez más importantes en la síntesis orgánica.
Los métodos existentes para la conversión indol/indeno carecen de enantioselectividad para crear atropisómeros quirales.

Objetivo del estudio:

Desarrollar la primera inserción enantioselectiva de un solo carbono para la síntesis de quinolinas atropocirales.
Establecer un método para la creación de ejes estereogénicos C(sp2) -C(sp2) en sistemas de (hetero) biarilo.

Principales métodos:

Utilizó un intermediario quiral de Rh-carbinoides.
Desarrolló una nueva reacción de expansión de anillo de 3-ariles.

Principales resultados:

Se ha logrado con éxito la inserción enantioselectiva de un solo carbono.
Cinolinas atropocirales sintetizadas a partir de indoles de 3-arilo con un alto estereocontrol.
Se ha demostrado la generación de un eje estereogénico C(sp2) -C(sp2).

Conclusiones:

Este estudio informa de la primera inserción enantioselectiva de un solo carbono para sintetizar quinolinas atropocirales.
El método desarrollado ofrece una nueva ruta a las valiosas moléculas quirales.
Destaca la utilidad de los carbinoides Rh quirales en la catálisis asimétrica.