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Formación de enlaces C-N oxidativos intermoleculares libres de metales a través de la funcionalización en tándem de
Abhishek A Kantak1, Shathaverdhan Potavathri, Rose A Barham
1Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, USA.
Journal of the American Chemical Society
|October 21, 2011
Resumen
Una nueva reacción de aminación oxidativa libre de metales sintetiza anilinas protegidas de arenos y ftalimida. Este método de química verde utiliza un oxidante de yodo y procede a través de un nuevo mecanismo de catión radical.
Área de la Ciencia:
- Química orgánica es la química orgánica.
- Química sintética de la química sintética.
Sus antecedentes:
- El desarrollo de métodos sintéticos eficientes y sostenibles es crucial en la química orgánica.
- Las reacciones de aminación oxidativa ofrecen vías para introducir funcionalidades de nitrógeno en moléculas orgánicas.
- Los métodos existentes a menudo se basan en catalizadores metálicos o condiciones adversas, lo que limita su atractivo de química verde.
Objetivo del estudio:
- Desarrollar una nueva reacción de aminación oxidativa intermolecular libre de metales.
- Proporcionar una síntesis rápida y respetuosa con el medio ambiente de anilinas protegidas.
- Para dilucidar el mecanismo de reacción y demostrar su utilidad sintética.
Principales métodos:
- Utilizando un oxidante de yodo para la transformación.
- Utilizando arenes simples y ftalimida como materiales de partida.
- Llevar a cabo investigaciones mecanicistas a través de estudios experimentales.
Principales resultados:
- Se desarrolló con éxito una nueva reacción de aminación oxidativa intermolecular.
- La reacción sintetiza eficientemente anilinas protegidas de arenos y ftalimida sin catalizadores metálicos.
- Los estudios mecánicos revelaron una vía única que involucra el ataque nucleófilo a un catión radical aromático.
Conclusiones:
- La reacción mediada por I(III) desarrollada ofrece un enfoque rápido, verde y libre de metales para la síntesis de anilina.
- El mecanismo distinto diferencia este método de las aminaciones electrofílicas reportadas anteriormente.
- Esta reacción proporciona una herramienta versátil para acceder a diversos derivados de anilina sustituidos.
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