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Tris (((boronatos) enriquecidos enantioméricamente: reactivos conjuntivos fácilmente accesibles para la síntesis
John R Coombs1, Liang Zhang, James P Morken
1Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States.
Journal of the American Chemical Society
|November 12, 2014
Resumen
Este estudio introduce un método para crear tris ((boronatos) quirales utilizando la diboración enantioselectiva catalítica. El proceso es seguido por la alquilación diastereoselectiva, lo que permite la síntesis selectiva para diversas aplicaciones.
Área de la Ciencia:
- Química orgánica es la química orgánica.
- La catálisis de la catálisis.
- Química del boro y su química.
Sus antecedentes:
- Los ésteres de boronato de vinilo son versátiles intermedios sintéticos.
- Las reacciones enantioselectivas y diastereoselectivas son cruciales para la síntesis de moléculas quirales complejas.
- El desarrollo de métodos eficientes para la funcionalización del boro sigue siendo un área activa de investigación.
Objetivo del estudio:
- Desarrollar una diboración catalítica enantioselectiva de los ésteres de boronato de vinilo.
- Para investigar la subsiguiente alquilación deborilativa diastereoselectiva.
- Establecer un método selectivo para la síntesis de tris (boronatos) quirales.
Principales métodos:
- Diboración catalítica enantioselectiva con el uso de catalizadores específicos.
- Alquilación deborilativa de los tres boronatos resultantes.
- Análisis de los resultados estereoquímicos utilizando técnicas analíticas.
Principales resultados:
- Los boronatos quirales fueron sintetizados con éxito con alta selectividad.
- La alquilación deborilativa procedió con una alta diastereoselectividad.
- Tanto las vías de alquilación intermolecular e intramolecular fueron efectivas.
Conclusiones:
- El método desarrollado proporciona un acceso eficiente a los tris ((boronatos) quirales.
- Este trabajo amplía la utilidad sintética de los ésteres de boronato de vinilo.
- Las transformaciones estereoselectivas son valiosas para la construcción de moléculas orgánicas complejas.
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