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El tetrafluoroborato de tiantreno de vinilo: un reactivo vinilante práctico y versátil hecho de etileno

Fabio Juliá¹, Jiyao Yan¹, Fritz Paulus¹

¹Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm Platz 1, D-45470 Mülheim an der Ruhr, Germany.

Journal of the American Chemical Society

|August 10, 2021

Resumen

Los investigadores desarrollaron un nuevo reactivo vinilante, una sal de tiantenio vinílico, que ofrece una solución práctica para la síntesis. Este compuesto estable y fácil de preparar amplía las aplicaciones en las reacciones de anulación y acoplamiento cruzado.

Área de la Ciencia:

Síntesis orgánica
Química sintética
Desarrollo de reactivos

Sus antecedentes:

Los electrófilos de vinilo son cruciales en la síntesis, pero carecen de reactivos prácticos.
Los agentes vinilantes existentes presentan limitaciones en cuanto a su alcance y accesibilidad.

Objetivo del estudio:

Introducir una nueva sal de tiantenio vinílico como un reactivo vinilante eficaz.
Demostrar la utilidad del reactivo en diversas transformaciones sintéticas.

Principales métodos:

Preparación de la sal de tiantenio vinílico a partir del gas etileno.
Aplicación del reactivo en reacciones de anulación de (hetero) ciclos.
Utilizando el reactivo para la N-vinilación de heterociclos.
El uso del reactivo en reacciones de acoplamiento cruzado catalizadas por paladio.

Principales resultados:

La sal de tiantenio vinílico es estable, cristalina y se sintetiza fácilmente en un solo paso.
El reactivo muestra una amplia utilidad en la química de anulación.
Se logró la N-vinilización exitosa de varios compuestos heterocíclicos.
El reactivo demostró ser eficaz en las reacciones de acoplamiento cruzado catalizadas por paladio.

Conclusiones:

La sal de tiantenio de vinilo representa un avance significativo en los reactivos de vinilo.
Sus características estructurales únicas ofrecen un perfil de reactividad distinto en comparación con otros derivados de vinilo sulfonio.
Este reactivo expande las posibilidades sintéticas en la química orgánica.

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