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Updated: Nov 23, 2025

Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate

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Alilación selectiva del grupo enantiotópico catalizado por el cobre de los diborilacanos

Minjae Kim¹, Bohyun Park^2,3, Minkyeong Shin¹

¹Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

Journal of the American Chemical Society

|January 4, 2021

Resumen

Este estudio introduce una nueva reacción catalizada por el cobre para la alilación selectiva de gem-diborilalcanos. El método produce eficientemente ésteres de boronato enriquecidos con enantio, valiosos bloques de construcción quirales.

Área de la Ciencia:

Química orgánica
Catálisis
Química sintética

Sus antecedentes:

Los gem-diborilalcanos son intermediarios sintéticos muy versátiles.
La síntesis enantioselectiva de compuestos que contienen boro sigue siendo un desafío.

Objetivo del estudio:

Desarrollar una alilación enantioselectiva catalizada por el cobre de gem-diborilalcanos.
Para sintetizar ésteres de boronato homoalílico enriquecidos con enantio.

Principales métodos:

Reacción catalizada por bromuro de cobre.
Se ha utilizado un ligando de fosforamidita derivado de H8-BINOL.
Se emplean bromuros de alilo como agentes alquilantes.

Principales resultados:

Se ha logrado la alilación enantioselectiva de gem-diborilalcanos.
Generó varios ésteres de boronato homoalílico enriquecidos con enantiómeros en buenos rendimientos y altas relaciones enantioméricas.
Se ha establecido un intermediario quiral de α-borilalquilo-cobre.

Conclusiones:

Desarrolló un sistema catalítico eficaz para la síntesis enantioselectiva.
Demostró la utilidad de gem-diborylalkanes en la creación de bloques de construcción quirales.
Proporcionó conocimientos mecanicistas sobre el proceso de transmisión enantioselectiva.

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