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Updated: Dec 10, 2025

Solid-phase Synthesis of [4.4] Spirocyclic Oximes

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Published on: February 6, 2019

Acceso atroposelectivo a los estirenos axialmente quirales basados en oxindoles a través de la estrategia de

Chun Ma¹, Feng-Tao Sheng¹, Hai-Qing Wang¹

¹School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China.

Journal of the American Chemical Society

|August 27, 2020

Resumen

Los químicos desarrollaron un nuevo método para crear estirenos quirales axialmente utilizando resolución cinética catalítica. Esta estrategia produce eficientemente valiosas moléculas quirales basadas en oxindoles con alta selectividad.

Área de la Ciencia:

Química orgánica
Síntesis asimétrica

Sus antecedentes:

Las moléculas axialmente quirales son importantes pero difíciles de sintetizar.
La síntesis asimétrica catalítica de estirenos quirales axialmente está subdesarrollada debido a las bajas barreras de rotación.

Objetivo del estudio:

Desarrollar una poderosa estrategia para la síntesis catalítica atroposelectiva de estirenos quirales axialmente.
Lograr la primera síntesis atroposelectiva de estirenos quirales axialmente basados en oxindoles.

Principales métodos:

Se empleó la resolución cinética catalítica.
Síntesis de derivados del estireno quiral axial basados en oxindoles.

Principales resultados:

Logró la primera síntesis atroposelectiva de estirenos quirales axialmente basados en oxindoles.
Se obtienen elevadas diastereoselectividades (hasta 94:6 dr) y enantioselectividades (hasta 98% ee).
Se ha demostrado un alto factor de selectividad (S hasta 106).

Conclusiones:

La estrategia de resolución cinética catalítica proporciona un acceso eficiente a los estirenos quirales axialmente basados en oxindoles.
Este método es robusto para sintetizar derivados de bisamida con quiralidad axial y central.
Se introdujo una nueva clase de compuestos atropisoméricos, específicamente estirenos quirales axialmente.

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