Characterization of a Silver Vinylcarbene Intermediate in Carbene–Alkyne Metathesis and Its Concerted C(sp2)–H Bond Insertion
Herein we present compelling evidence of the intervention of electrophilic silver vinylcarbenes in the carbene-alkyne metathesis (CAM) reaction, leading to a pivotal C(sp2)-H insertion process. The delicate equilibrium between the stability and reactivity of transient species is crucial for efficien...
| Autores: | , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/28262 |
| Acceso en línea: | http://hdl.handle.net/10256/28262 |
| Access Level: | acceso abierto |
| Palabra clave: | Metàtesi (Química) Metathesis (Chemistry) Intermediaris (Química) Intermediates (Chemistry) Carbens Carbenes (Methylene compounds) Carboni -- Compostos Carbon compounds Hidrocarburs Hydrocarbons Plata Silver |
| Sumario: | Herein we present compelling evidence of the intervention of electrophilic silver vinylcarbenes in the carbene-alkyne metathesis (CAM) reaction, leading to a pivotal C(sp2)-H insertion process. The delicate equilibrium between the stability and reactivity of transient species is crucial for efficient detection. Through meticulous mechanistic exploration, we unveil that the mechanism for the C(sp2)-H insertion hinges on the substitution pattern. Indeed, it departs from the previously documented stepwise mechanism (involving Wheland intermediates), and it follows a concerted route, quite uncommon for this transformation |
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