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: Acceptor properties Acrylate metathesis Chemical-shifts Decomposition Hydrogenation Ligands synthesis N-heterocyclic carbenes Polymerization Ring-closing metathesis Ruthenium complexes

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: Astronomia / física Chemistry, inorganic & nuclear Chemistry, organic Ciências agrárias i Ciências biológicas ii Engenharias ii Inorganic chemistry Materiais Organic chemistry Physical and theoretical chemistry Química

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

Fecha de alta del registro: 2021-10-10

Página final: 4555

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

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

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

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