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Fotoquímica C2-C2) Activación de enlaces en fosfalicinas: una nueva ruta hacia complejos de ciáfidos terminales
Tim Görlich1, Daniel S Frost1, Nico Boback1
1Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195 Berlin, Germany.
Journal of the American Chemical Society
|November 10, 2021
Resumen
La activación fotoquímica de los complejos de platino rompe los enlaces C-C, formando nuevos complejos de platino y ciáfido. Estos complejos reaccionan con azidas para crear compuestos triazafosfolatos, ofreciendo una ruta de síntesis limpia.
Área de la Ciencia:
- Química organometálica
- La fotoquímica
- Química sintética
Sus antecedentes:
- Las fosfalicinas son bloques de construcción versátiles en la química organometálica.
- Los complejos de platino se usan ampliamente en catálisis y síntesis.
- La comprensión de la activación del enlace C-C es crucial para desarrollar nuevas metodologías sintéticas.
Objetivo del estudio:
- Investigar la activación fotoquímica del enlace C(sp) -C(sp2) en los complejos Pt(0) -arilo-fosfalquino.
- Desarrollar una nueva vía sintética para complejos terminales de Pt (II) - ciáfido.
- Para explorar la reactividad de estos complejos de ciáfido en reacciones de cicloadición.
Principales métodos:
- Activación fotoquímica de los complejos Pt(0) -η2-arilo-fosfalquino.
- Caracterización de los complejos Pt (II) - ciáfido resultantes.
- Investigación de las reacciones de cicloadición [3+2] con azidas orgánicos.
Principales resultados:
- Se logró la activación fotoquímica selectiva del enlace C(sp) -C(sp2).
- Se sintetizaron nuevos complejos terminales de Pt (II) - ciáfido a través de una ruta limpia y económica para el átomo.
- Los complejos de Pt(II) -ciafido se sometieron a [3+2] cicloadición con azidas orgánicas para formar complejos de Pt(II) -triazafosfolato.
- Se observó la reacción de eliminación reductiva inversa al calentar.
Conclusiones:
- La escisión fotoquímica del enlace C-C en los complejos de Pt(0) -fosfalquino proporciona una síntesis eficiente de los complejos de Pt(II) -ciafido.
- Estos complejos de ciáfido son valiosos intermedios para la construcción de heterociclos.
- La metodología desarrollada ofrece un enfoque limpio y económico para estructuras organometálicas complejas.
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