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Introduction
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The radical dimerization of ketones or aldehydes gives vicinal diols through a pinacol coupling reaction. However, the behavior of titanium metals used for the reaction as a source of electrons is unusual. When the reaction is carried out in the presence of titanium, diols can be isolated at low temperatures. Else titanium further reacts with diols, forming alkenes through the McMurry reaction.

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Carbonización sin metales y sin CO de los yoduros de alquilo

Emilien Le Saux¹, Maurus Mathis¹, Giorgia Panizzolo¹

¹Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland.

Journal of the American Chemical Society

|October 16, 2025

Resumen

Los investigadores desarrollaron un nuevo método fotoquímico para la carbonilación de yoduros de alquilo. Este proceso fácil de usar evita el monóxido de carbono y los catalizadores metálicos, produciendo eficientemente ácidos carboxílicos y amidas.

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Área de la Ciencia:

Química orgánica
La fotoquímica
Química sintética

Sus antecedentes:

Los métodos tradicionales de carbonilación a menudo requieren gas de monóxido de carbono peligroso o catalizadores metálicos costosos.
El desarrollo de técnicas de carbonilación alternativas, más seguras y más accesibles es crucial para la química sintética.

Objetivo del estudio:

Introducir un nuevo método fotoquímico, eficiente y versátil para la carbonilación de yoduros de alquilo.
Para eludir la necesidad de gas de monóxido de carbono y catalizadores metálicos en las reacciones de carbonilación.

Principales métodos:

Se utilizó un reactivo de formato de arilo simple que libera monóxido de carbono y una especie de fenolato fotoactivo tras la adición de una base suave.
Aprovechó la fotoactividad del fenolato para iniciar la transferencia de un solo electrón con yoduros de alquilo, generando radicales de alquilo.
Facilitó la adición de radicales alquilo al monóxido de carbono para formar productos de ácido carboxílico y amida.

Principales resultados:

Se ha demostrado con éxito una nueva carbonilación fotoquímica de yoduros de alquilo.
El método es altamente eficiente y versátil, tolerando una amplia gama de grupos funcionales.
Se eliminó el requisito de gas de monóxido de carbono externo y catalizadores metálicos.

Conclusiones:

El enfoque fotoquímico desarrollado ofrece una alternativa amigable y sostenible para la química de la carbonilación.
Este método proporciona una amplia aplicabilidad en la síntesis de ácidos carboxílicos y amidas a partir de yoduros de alquilo.