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Fosfinación estereospecífica y tioeterificación de los ésteres organobóricos

Hao Liang¹, Michael R Berwanger¹, James P Morken¹

¹Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States.

Journal of the American Chemical Society

|July 2, 2024

Resumen

Los ésteres organobóricos pueden ser estereospecíficamente fosfinados y tiolados utilizando la catálisis del cobre. Este método es valioso para sintetizar ligandos quirales y compuestos biológicamente activos.

Área de la Ciencia:

Química orgánica
Química orgánica de los metales
Metodología sintética

Sus antecedentes:

Los ésteres organobóricos son productos intermedios sintéticos muy versátiles.
La funcionalización estereospecífica de los ésteres organobóricos sigue siendo un desafío.
La catálisis del cobre ofrece una vía para transformaciones selectivas.

Objetivo del estudio:

Desarrollar nuevos métodos para la fosfinación estereospecífica y la tiolación de ésteres organobóricos.
Explorar la utilidad de los ésteres organobóricos activados por alquillitio en reacciones catalizadas por cobre.
Para demostrar la aplicación de estos métodos en la síntesis de moléculas valiosas.

Principales métodos:

La activación por alquilitio de los ésteres organobóricos.
Fosfinación catalizada por el cobre con clorofosfinas.
Tiolación catalizada por el cobre utilizando electrofiles de tiolsulfonato.

Principales resultados:

La fosfinación estereospecífica de los ésteres organobóricos se logró con cloruro de cobre y clorofosfinas.
La tiolación estereospecífica de ésteres organobóricos se realizó utilizando electrofilos de tiolsulfonato bajo catálisis de cobre.
Los métodos desarrollados proporcionan acceso a ligandos quirales y moléculas biológicamente relevantes.

Conclusiones:

Los ésteres organobóricos activados por alquillitio son sustratos efectivos para la fosfinación y la tiolación estereospecíficas catalizadas por cobre.
Estas nuevas rutas sintéticas amplían la caja de herramientas para crear moléculas orgánicas complejas.
La metodología es prometedora para la preparación eficiente de ligandos quirales y compuestos bioactivos.

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