Video Experimental Relacionado

Updated: Nov 15, 2025

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives

Published on: January 19, 2016

Funcionalizaciones secuenciales de enlaces C-F de trifluoroacetamidas y acetatos a través de desplazamientos del

You-Jie Yu¹, Feng-Lian Zhang¹, Tian-Yu Peng¹

¹Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.

Science (New York, N.Y.)

|March 6, 2021

Resumen

Este estudio presenta un nuevo método para sustituir selectivamente los átomos de flúor en los grupos trifluorometilo, creando valiosos compuestos parcialmente fluorados. El enfoque ofrece un control preciso de la desfluoración para diversas síntesis químicas.

Área de la Ciencia:

Química orgánica
Química del fluor
La Química Radical

Sus antecedentes:

La desfluorización de los grupos trifluorometilo es una vía económica para obtener moléculas parcialmente fluoradas.
El reemplazo controlado de uno o dos átomos de flúor con alta quimioselectividad es un desafío.

Objetivo del estudio:

Desarrollar una estrategia general para la funcionalización secuencial de enlaces carbono-fluoro (C-F) de las trifluoroacetamidas y los trifluoroacetatos.
Para lograr la generación secuencial de radicales difluoro y monofluoroalquilo controlables por quimioselectividad.

Principales métodos:

Activación del oxígeno carbonílico mediante el uso de un radical 4-dimetilaminopiridina-boro.
Cambio de centro de giro para desencadenar la escisión del enlace CF.
Funcionalización secuencial de los radicales generados con diferentes trampas radicales.

Principales resultados:

Demostró una estrategia general para la funcionalización secuencial de bonos C-F.
Se logra la generación selectiva de radicales difluoro y monofluoroalquilo.
Sintetizó diversos productos fluorados con alta quimioselectividad.

Conclusiones:

El método desarrollado proporciona una vía controlable a los compuestos parcialmente fluorados de los precursores de trifluorometilo.
El mecanismo de reacción y el origen de la quimioselectividad se aclararon a través de estudios experimentales y computacionales.
Esta estrategia ofrece una herramienta valiosa para sintetizar moléculas fluoradas complejas.

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