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N,N-dietil O-carbamato: grupo de metalización dirigida y socio de acoplamiento cruzado ortogonal Suzuki-Miyaura

Aurora Antoft-Finch¹, Tom Blackburn, Victor Snieckus

¹Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada.

Journal of the American Chemical Society

|November 26, 2009

Resumen

Este estudio introduce la primera reacción de acoplamiento cruzado Suzuki-Miyaura para aril O-carbamato utilizando un catalizador de níquel. Este método proporciona una síntesis eficiente de moléculas sustituidas, evitando pasos de protección.

Área de la Ciencia:

Química orgánica es la química orgánica.
La catálisis de la catálisis.
Metodología sintética de la metodología sintética.

Sus antecedentes:

Los O-carbamatos de arilo son valiosos en la química de la orto-metalización dirigida (DoM).
El acoplamiento cruzado Suzuki-Miyaura es una reacción clave para la formación de enlaces carbono-carbono.
Se necesitan métodos eficientes para la funcionalización de los O-carbamatos de arilo.

Objetivo del estudio:

Para desarrollar la primera reacción de acoplamiento cruzado Suzuki-Miyaura utilizando O-carbamatos de arilo.
Para explorar el uso de un catalizador de níquel barato para esta transformación.
Para establecer la influencia del agua en la eficiencia de la reacción.

Principales métodos:

Reacción de acoplamiento cruzado Suzuki-Miyaura.
El uso de NiCl2(PCy3)2 como catalizador.
Estrategias de ortometalización dirigida (DoM, por sus siglas en inglés).

Principales resultados:

Exitoso acoplamiento cruzado Suzuki-Miyaura de arilo y heteroarilo O-carbamato.
Demostrado amplio alcance sintético y buena eficiencia.
Identificó el papel crítico del agua y el equilibrio ácido borónico/boroxina.

Conclusiones:

Desarrolló un método novedoso y eficiente para el acoplamiento Suzuki-Miyaura de O-carbamatos.
La metodología simplifica las rutas sintéticas evitando los pasos de protección / desprotección.
Este enfoque ofrece una herramienta versátil para sintetizar moléculas únicamente sustituidas.

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