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Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

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Hidroformilación catalizada por el rodio de los ciclopropenos

William M Sherrill¹, Michael Rubin

¹Department of Chemistry, University of Kansas and Center for Environmentally Beneficial Catalysis, 1251 Wescoe Hall Drive, Malott Hall, Lawrence, Kansas 66045-7582, USA.

Journal of the American Chemical Society

|September 23, 2008

Resumen

Los investigadores desarrollaron la primera hidroformilación asimétrica catalítica para los ciclopropenos. Este eficiente método obtiene ciclopropilcarboxaldehídos ópticamente activos a partir de simples materiales de partida bajo condiciones suaves.

Área de la Ciencia:

Química orgánica es la química orgánica.
La catálisis de la catálisis.

Sus antecedentes:

Los ciclopropenos son alquenos cíclicos tensados con una reactividad única.
La catálisis asimétrica es crucial para sintetizar compuestos enantioméricamente puros.

Objetivo del estudio:

Desarrollar la primera hidroformilación asimétrica catalítica de los ciclopropenos.
Establecer una nueva ruta atómica y económica hacia los ciclopropilcarboxaldehídos ópticamente activos.

Principales métodos:

Hidroformilación asimétrica catalítica utilizando un catalizador de metales de transición.
Empleando condiciones de reacción suaves y bajas cargas de catalizador.

Principales resultados:

Logró la primera hidroformilación diastereo y enantioselectiva exitosa de los ciclopropenos.
Se obtienen altos rendimientos de ciclopropilcarboxaldehídos.
Se ha demostrado una reacción eficiente en condiciones suaves.

Conclusiones:

Se ha establecido una novedosa y conveniente metodología para la síntesis de ciclopropilcarboxaldehídos ópticamente activos a partir de ciclopropenos procirales.
El método desarrollado es atómico-económico y procede con alta eficiencia.

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