Photocatalyst-free light-mediated three-component alkoxy-, hydroxy-, and azidotrifluoromethylation of alkenes
Photoinduced radical-polar crossover (RPC) reactions generally rely on the use of an external photocatalyst to generate the corresponding radical and ionic species, selected according to the redox potentials of the involved species. Herein, we describe a multicomponent light-induced RPC reaction tha...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/718299 |
| Acceso en línea: | http://hdl.handle.net/10486/718299 https://dx.doi.org/10.1039/d4qo01520g |
| Access Level: | acceso abierto |
| Palabra clave: | Alkenylation free radical reactions photocatalysts photocatalytic activity reaction intermediates redox reactions Química |
| Sumario: | Photoinduced radical-polar crossover (RPC) reactions generally rely on the use of an external photocatalyst to generate the corresponding radical and ionic species, selected according to the redox potentials of the involved species. Herein, we describe a multicomponent light-induced RPC reaction that does not require an exogenous photocatalyst, enabling the efficient synthesis of diverse 1,2-trifluoromethyl alkyl ethers, alcohols, and azides. This protocol allows for the bifunctionalization of alkenes under mild conditions using purple light and a thianthrenium salt as a trifluoromethylating agent. Mechanistic experiments confirmed the formation of a benzylic sulfonium intermediate that can participate in different nucleophilic substitution reactions, being an alternative photocatalyst-free method to the classical RPC |
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