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Un reordenamiento de fosforimidato para la preparación fácil y selectiva de aminas alilicas
1Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
Journal of the American Chemical Society
|April 29, 2004
Resumen
Un nuevo [3,3]-reordenamiento de los fosforimidatos alílicos produce fosforamidatos alílicos. Este método produce eficientemente aminas alilicas protegidas, valiosos intermediarios sintéticos.
Área de la Ciencia:
- Química orgánica es la química orgánica.
- Metodología sintética de la metodología sintética.
- Química del fósforo Química del fósforo
Sus antecedentes:
- Las aminas alilicas son bloques de construcción cruciales en la síntesis orgánica.
- Los métodos existentes para la síntesis de aminas alilicas pueden ser limitados en alcance o eficiencia.
- Los reactivos a base de fósforo ofrecen una reactividad única para la construcción de moléculas complejas.
Objetivo del estudio:
- Desarrollar una nueva reacción de reordenamiento para la síntesis de fosforamidatos alílicos.
- Establecer una ruta versátil para proteger las aminas alilicas de los precursores fácilmente disponibles.
- Explorar el alcance y las limitaciones de la nueva metodología de reordenamiento.
Principales métodos:
- Preparación de fosforimidas alilicos a partir de alcoholes alilicos, azidas y clorofosfitos.
- Reordenamiento térmico [3,3] de los fosforimidatos alílicos a los fosforamidatos alílicos.
- Desprotección y funcionalización de los fosforamidatos alilicos para obtener aminas alilicos protegidas.
Principales resultados:
- El reordenamiento [3,3] se lleva a cabo en condiciones térmicas, proporcionando isómeros individuales de los fosforamidatos alílicos.
- La reacción demuestra tolerancia a diversos patrones de sustitución en los materiales de partida.
- El tratamiento posterior con etanethiolato y ácido genera con éxito aminas alilicas protegidas.
Conclusiones:
- Se ha descubierto una nueva y eficiente [3,3]-reorganización de los fosforimidatos alílicos.
- Esta metodología proporciona una estrategia versátil para acceder a los principales intermediarios de aminas alilicas.
- El procedimiento desarrollado ofrece una ruta atractiva para los químicos sintéticos.
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