Triple Alkyl C–H Bond Activation Mediated by Ruthenium(II): Preparation of Isopropenyl‐Substituted Carbene Complexes

Autor:	Robert Wolf, Markus Plois
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Stereochemistry Chemistry Ligand Activated complex Substituent chemistry.chemical_element Ruthenium Inorganic Chemistry chemistry.chemical_compound Yield (chemistry) Carbene Isopropyl Alkyl
Zdroj:	European Journal of Inorganic Chemistry. 2010:4419-4422
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.201000677
Popis:	The reaction of [RuCl 2 (cod)] x (cod = 1,5-cyclooctadiene), 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (IPr), tricyclo-hexylphosphane (PCy 3 ) and KOtBu in a 1:1:2:1 ratio affords the new alkenyl carbene complex [RuCl(IPr")(PCy 3 ) 2 ] (1) in 24 % isolated yield. Triphenylphosphane complex [RuCl-(IPr")(PPh 3 ) 2 ] (2) was isolated together with the single C-H activated complex [RuCl(IPr')(PPh 3 ) 2 ] (3). Complexes 1 and 2 feature a metalated isopropenyl substituent on the IPr" ligand, which results from the triple C-H activation of an isopropyl group. A stepwise mechanism for the formation of complexes 1 and 2 is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bcccb8556ff9ca9cd2cf1b96c84ee8a3 https://doi.org/10.1002/ejic.201000677 Zobrazit plný text záznamu Plný text