Autor segons l'article: Day, Craig S.; Fogg, Deryn E.;
Departament: Química Analítica i Química Orgànica
Autor/s de la URV: Day, Craig
Paraules clau: Ruthenium complexes Ring-closing metathesis Polymerization N-heterocyclic carbenes Ligands synthesis Hydrogenation Decomposition Chemical-shifts Acrylate metathesis Acceptor properties
Resum: 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.
Àrees temàtiques: 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
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: craig.day@estudiants.urv.cat
Identificador de l'autor: 0000-0002-6931-0280
Pàgina final: 4555
Data d'alta del registre: 2024-09-07
Volum de revista: 37
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://pubs.acs.org/doi/10.1021/acs.organomet.8b00745
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Organometallics. 37 (24): 4551-4555
Referència 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 de l'article: 10.1021/acs.organomet.8b00745
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2018
Pàgina inicial: 4551
Tipus de publicació: Journal Publications
Repositori URV