Synthesis of Ruthenium Boryl Analogues of the Shvo Metal−Ligand Bifunctional Catalyst
| Autor: | Nicholas A. Isley, Liza Koren-Selfridge, Timothy Clark, Ilia A. Guzei, Ian P. Query, Joel A. Hanson |
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| Rok vydání: | 2010 |
| Předmět: |
Stereochemistry
Ligand Organic Chemistry chemistry.chemical_element Medicinal chemistry Borylation Article Ruthenium Bifunctional catalyst Catalysis Inorganic Chemistry Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Phenol Reactivity (chemistry) Physical and Theoretical Chemistry |
| Zdroj: | Organometallics. 29:3896-3900 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/om1005808 |
| Popis: | Metal boryl complexes have received significant attention in the literature in recent years due to their role as key intermediates in a number of metal-catalyzed borylation reactions. The ligand scaffold is known to have a significant impact on the observed reactivity of these metal boryl complexes. A synthetic strategy to access ruthenium boryl analogues of the Shvo metal-ligand catalysts is described. Heating a precursor to Shvo's catalyst (1) with bis(catecholato)diboron at 50 °C provided ruthenium boryl complex 3 [2,5-Ph(2)-3,4-Tol(2)(η(5)-C(4)COBcat)Ru(CO)(2)Bcat] (Bcat = catecholatoboryl). Addition of bis(catecholato)diboron to complex 1 in the presence of a phenol results in ruthenium boryl complex5 [2,5-Ph(2)-3,4-Tol(2)(η(5)-C(4)COH)Ru(CO)(2)Bcat] at 22 °C in 30% isolated yield. A single crystal X-ray analysis of complex 5 confirmed the assigned structure. An improved synthesis of ruthenium boryl complex 5 was developed by the in situ formation of complex 3 [2,5-Ph(2)-3,4-Tol(2)(η(5)-C(4)COBcat)Ru(CO)(2)Bcat] followed by addition of the phenol, resulting in a 51% yield. |
| Databáze: | OpenAIRE |
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