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Hacia la síntesis de un cinturón de hidrocarburos de alta tensión
Tan-Hao Shi1, Qing-Hui Guo1, Shuo Tong1
1MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
Journal of the American Chemical Society
|February 22, 2020
Resumen
Los químicos desarrollaron una nueva síntesis de una sola olla para cinturones de hidrocarburos y sus derivados. Este método eficiente permite la creación de nuevas moléculas en forma de cinturón para aplicaciones de química supramolecular y nanotecnología.
Área de la Ciencia:
- Química orgánica
- Química supramolecular
- Los nanomateriales de carbono
Sus antecedentes:
- Los cinturones de hidrocarburos, incluidas las arenas de cinturón, son moléculas fascinantes con estructuras y propiedades únicas.
- Su síntesis presenta desafíos significativos, limitando la exploración en la química supramolecular y la nanociencia.
Objetivo del estudio:
- Desarrollar un enfoque sintético general y eficiente para los cinturones de hidrocarburos y sus derivados.
- Para permitir la construcción de nuevas moléculas en forma de cinturón a partir de materiales de partida accesibles.
Principales métodos:
- Utilizó la alquilación intramolecular de Friedel-Crafts en una reacción de una olla para sintetizar arenas octohidrobeltas.
- Utilizó la aromatización oxidada por DDQ y las subsiguientes reacciones de cicloadición [4 + 2] con DDQ o TCNE.
- Se genera areno de cinturón totalmente conjugado a través de la reacción retro-Diels-Alder en condiciones MALDI.
Principales resultados:
- Sintetizó con éxito arenas octohidrobeltas [1] a través de una reacción de una olla operacionalmente simple.
- Produjo tetrahidrobelto[8]areno-DDQ2, tetrahidrobelto[8]areno-TCNE2 y aductos de cinturón[8]areno-DDQ4.
- Se observó la formación de cinturón[8]areno, un cinturón de hidrocarburos totalmente conjugado, a partir de un adyutivo de cinturón[8]areno-DDQ4.
Conclusiones:
- Estableció un método sintético práctico y general para la construcción de cinturones de hidrocarburos.
- El nuevo enfoque facilita la creación de moléculas en forma de cinturón, avanzando la química supramolecular y la nanociencia del carbono.
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