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Los primeros acoplamientos cruzados Suzuki de sales de ariltrimetilamonio y amonio
Simon B Blakey1, David W C MacMillan
1Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA.
Journal of the American Chemical Society
|June 6, 2003
Resumen
Este estudio introduce la primera reacción de acoplamiento cruzado de Suzuki utilizando triflados de ariltrimetilamonio con un catalizador IMes.Ni (0). Este método suave activa efectivamente las anilinas para diversas aplicaciones de acoplamiento cruzado.
Área de la Ciencia:
- Química orgánica es la química orgánica.
- La catálisis es la catálisis.
- Metodología sintética de la metodología sintética.
Sus antecedentes:
- Los derivados de la anilina son bloques de construcción cruciales en la síntesis orgánica.
- Los métodos tradicionales para activar anilines para el acoplamiento cruzado pueden ser duros o limitados en alcance.
- El desarrollo de estrategias de activación más suaves y versátiles es esencial para una síntesis eficiente.
Objetivo del estudio:
- Para describir la primera reacción de acoplamiento cruzado de Suzuki empleando triflados de ariltrimetilamonio.
- Establecer un método novedoso y suave para activar anilines para el acoplamiento cruzado catalizado por metal.
- Explorar el alcance del sustrato y la tolerancia del grupo funcional de esta nueva metodología.
Principales métodos:
- Utilizó un sistema de catalizador IMes.Ni(0) para la reacción de acoplamiento cruzado Suzuki.
- Empleado ariltrimetilamonio triflados como los socios de acoplamiento electrófilo.
- Investigó la reacción con varios ácidos arilborónicos, ésteres de boronato y alquenilboranos.
Principales resultados:
- Se ha demostrado con éxito el primer acoplamiento cruzado Suzuki de triflados de ariltrimetilamonio.
- Demostró una amplia tolerancia del grupo funcional, alojando tanto a los donantes de electrones como a los sustituyentes de retiro de electrones.
- Amplió el alcance de la reacción más allá de los ácidos arilborónicos para incluir ésteres de boronato y alquenilboranos.
Conclusiones:
- La metodología descrita proporciona una ruta novedosa y suave para activar las anilinas.
- Este enfoque ofrece una plataforma versátil para sintetizar moléculas orgánicas complejas a través del acoplamiento cruzado Suzuki.
- El uso de triflados de ariltrimetilamonio representa un avance significativo en la química de acoplamiento cruzado.
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