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Imidación electroquímica intermolecular de C(sp³)-H bencílico mediante acoplamiento cruzado deshidrogenativo mediado

Shao-Peng Wang¹, Ai-Hua Yin¹, Feng-Ju Lu¹

¹College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, P. R. China.

The Journal of organic chemistry

|February 19, 2026

Resumen

Este estudio presenta un método electroquímico verde para crear enlaces C-N bencílicos. Acopla eficientemente diarilmetanos y alquilarrenos con sulfonamidas, evitando metales de transición y oxidantes.

Área de la Ciencia:

Química Orgánica
Electroquímica
Síntesis Sostenible

Sus antecedentes:

La construcción de enlaces C(sp3)-N bencílicos es crucial en la síntesis orgánica.
Los métodos existentes a menudo requieren condiciones duras, reactivos prefuncionalizados o catalizadores de metales de transición.

Objetivo del estudio:

Desarrollar un método electroquímico directo, verde y sostenible para la imidación C(sp3)-H bencílica.
Lograr el acoplamiento intermolecular de diarilmetanos y alquilarrenos con N-acilsulfonamidas o sulfonimidas.

Principales métodos:

Imidación electroquímica C(sp3)-H bencílica intermolecular en una celda sin dividir.
Se utilizó bromuro de sodio como mediador y electrolito de soporte.
Condiciones libres de metales de transición y oxidantes externos.

Principales resultados:

Imidación exitosa de enlaces C(sp3)-H bencílicos primarios y secundarios con sustratos diversos.
Se demostró la utilidad sintética mediante escalado, derivatización y funcionalización en etapa tardía.
Se propuso un mecanismo que involucra una especie N-bromo-imidilo mediada por bromo e intermedios radicalarios.

Conclusiones:

La estrategia electroquímica desarrollada ofrece una ruta sostenible y eficiente hacia los enlaces C(sp3)-N bencílicos.
La metodología es versátil, escalable y aplicable a moléculas complejas.
Los hallazgos proporcionan información valiosa sobre la funcionalización C-H electroquímica mediada por radicales.

Palabras clave:

Química orgánica Electroquímica Síntesis sostenible Activación C-H Formación de enlaces C-N Imidación

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