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Arilmagnesización de alquinas catalizadas cooperativamente por complejos de hierro y cobre

Eiji Shirakawa¹, Takafumi Yamagami, Takahiro Kimura

¹Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan. shirakawa@kuchem.kyoto-u.ac.jp

Journal of the American Chemical Society

|December 8, 2005

Resumen

Los catalizadores de hierro y cobre trabajan juntos para lograr la arilmagnesificación de los alquinos. Esta esencial catálisis cooperativa es clave para la producción de valiosos compuestos de bromuro de 2-arilo-1-alquenilmagnesio.

Área de la Ciencia:

Química organometálica Química orgánica de los metales.
La catálisis de la catálisis.

Sus antecedentes:

Las reacciones de arilmagnesificación son importantes transformaciones sintéticas.
Las alquinas no funcionalizadas son sustratos difíciles para la catálisis organometálica.

Objetivo del estudio:

Desarrollar un nuevo sistema catalítico para la arilmagnesificación de alquinas no funcionalizadas.
Investigar el efecto cooperativo de los complejos de hierro y cobre en esta transformación.

Principales métodos:

Utilizó complejos de hierro y cobre como catalizadores cooperativos.
Empleó varias alquinas no funcionalizadas, incluidos los dialquilacetilenos.
Caracterizó los productos de bromuro de 2-arilo-1-alquenilmagnesio resultantes.

Principales resultados:

Se obtienen altos rendimientos de bromuros de 2-arilo-1-alquenilmagnesio.
Demostró el papel esencial de los catalizadores de hierro y cobre para una reacción eficiente.
Demostró la amplia aplicabilidad a diferentes tipos de alquinas.

Conclusiones:

La catálisis cooperativa por complejos de hierro y cobre permite una arilmagnesificación eficiente de alquinas no funcionalizadas.
Este método proporciona una valiosa ruta hacia compuestos orgánicos de magnesio sintéticamente útiles.

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