Autor según el artículo: Day, Craig S.; Fogg, Deryn E.;
Departamento: Química Analítica i Química Orgànica
Autor/es de la URV: Day, Craig
Palabras clave: Ruthenium complexes Ring-closing metathesis Polymerization N-heterocyclic carbenes Ligands synthesis Hydrogenation Decomposition Chemical-shifts Acrylate metathesis Acceptor properties
Resumen: The controlled reaction of [RuCl2(p-cymene)](2) with H(2)IMes generates the previously challenging precatalyst and Ru synthon RuCl2(p-cymene)(H(2)IMes) (Ru-2) in 96% isolated yield. Critical to success is inhibiting premature p-cymene displacement. This is achieved by carrying out the synthesis at ambient temperatures, protected from light, and at sufficient dilutions (25 mM in THF) to enable stoichiometric control and inhibit bimolecular decomposition. The ease with which p-cymene loss can be deliberately induced, however, is key to the utility of Ru-2 in both catalysis and catalyst synthesis. The transformation of Ru-2 into two second-generation olefin metathesis catalysts is described. RuCl2(H(2)IMes)(=CH(o-C6H4-(OPr)-Pr-i)) (HII) and RuCl2(H(2)IMes)(PPh3)(=CHPh) GII' (a desirable, faster-initiating analogue of GII) are accessible in ca. 80% yield over two steps from commercially available [RuCl2(p-cymene)](2). Synthesis from RuCl2(PPh3)(3), in comparison, requires three or four steps for HII or GII', respectively, and proceeds in lower yields.
Áreas temáticas: Química Physical and theoretical chemistry Organic chemistry Materiais Inorganic chemistry Engenharias ii Ciências biológicas ii Ciências agrárias i Chemistry, organic Chemistry, inorganic & nuclear Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: craig.day@estudiants.urv.cat
Identificador del autor: 0000-0002-6931-0280
Página final: 4555
Fecha de alta del registro: 2024-09-07
Volumen de revista: 37
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://pubs.acs.org/doi/10.1021/acs.organomet.8b00745
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Organometallics. 37 (24): 4551-4555
Referencia de l'ítem segons les normes APA: Day, Craig S.; Fogg, Deryn E.; (2018). High-Yield Synthesis of a Long-Sought, Labile Ru-NHC Complex and Its Application to the Concise Synthesis of Second-Generation Olefin Metathesis Catalysts. Organometallics, 37(24), 4551-4555. DOI: 10.1021/acs.organomet.8b00745
DOI del artículo: 10.1021/acs.organomet.8b00745
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2018
Página inicial: 4551
Tipo de publicación: Journal Publications
Repositori URV