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Título: | The microwave-assisted organocatalyzed rearrangement of Propargyl vinyl ethers to salicylaldehydes derivatives |
Autor: | Tejedor, David CSIC ORCID CVN ; Cotos, Leandro CSIC; Márquez-Arce, Daniel CSIC; Odriozola-Gimeno, Mikel; Torrent-Sucarrat, Miquel CSIC ORCID; Cossío, Fernando P.; García-Tellado, Fernando CSIC ORCID | Palabras clave: | Salicylaldehydes Propargyl vinyl ethers 6π-electrocyclization Microwave |
Fecha de publicación: | 12-jul-2015 | Citación: | XXXV Bienal de la Real Sociedad Española de Química (2015) | Resumen: | Propargyl vinyl ethers constitute a privileged group of small size, densely functionalized and readily accessible linear scaffolds. The main key to the chemical reactivity encoded in these structures is the [3,3]-sigmatropic rearrangement (propargyl Claisen rearrangement) shown in Scheme 1A, which takes place irreversibly and under thermodynamic control to generate the allene 2 which isomerizes to dienal. We have developed a microwave-assisted, catalytic (imidazole 10 mol-%) and scalable methodologyto transform these allenes into salicylaldehyde motives supported on a broad range of topologies, which spanned from simple aromatic monocycles to complex fused polycyclic systems. The reaction manifold is depicted in Scheme 1B. We have performed a theoretical study of this reaction which is in full agreement with the observed experimental results. The reaction scope and the proposed mechanism will be commented in our presentation. | Descripción: | Trabajo presentado en la reunión XXXV Bienal de la Real Sociedad Española de Química, celebrada en A Coruña del 19 al 23 de julio de 2015. | URI: | http://hdl.handle.net/10261/181577 |
Aparece en las colecciones: | (IPNA) Comunicaciones congresos |
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