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Síntesis iterativa de oligo[n]rotaxanos en el rendimiento excelente

James E M Lewis¹, Joby Winn², Luca Cera²

¹Chemistry, University of Southampton , Highfield, Southampton SO17 1BJ, U.K.

Journal of the American Chemical Society

|October 5, 2016

Resumen

Desarrollamos un método iterativo simple para sintetizar moléculas complejas de rotaxano con la colocación exacta del macrociclo. Esta técnica permite la creación de moléculas entrelazadas de ingeniería de precisión para futuras investigaciones.

Área de la Ciencia:

Química supramolecular
Síntesis orgánica

Sus antecedentes:

Los rotaxanos son moléculas mecánicamente entrelazadas con aplicaciones potenciales en nanotecnología.
El control preciso sobre el ensamblaje de rotaxanos complejos sigue siendo un desafío sintético.

Objetivo del estudio:

Desarrollar una estrategia de acoplamiento iterativo operacionalmente simple para sintetizar rotaxanos oligoméricos.
Para lograr un control preciso de la posición de cada macrociclo dentro de la estructura de rotaxano.

Principales métodos:

Estrategia de acoplamiento iterativo.
Reacción de cicloadición azida-alquina (CuAAC) catalizada por el cobre.
Optimización de las condiciones de reacción para una síntesis rápida.

Principales resultados:

Síntesis exitosa de homo y hetero[n]rotaxanos oligoméricos.
Se ha demostrado un control preciso del posicionamiento del macrociclo.
Se obtuvieron rendimientos excepcionales utilizando la reacción AT-CuAAC.

Conclusiones:

La estrategia desarrollada ofrece una ruta directa a los rotaxanos complejos.
Las condiciones optimizadas facilitan la síntesis rápida de los oligómeros objetivo.
Permite estudios adicionales sobre moléculas oligoméricas entrelazadas diseñadas con precisión.

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