Reactions of (polypyrazolylborato)(benzonitrile)rutheniums with terminal alkynes: Reactivity changeover by triethylamine toward arylalkyne polymerization or formation of (arylmethyl)(carbonyl) complexes
| Autor: | Suguru Matsuo, Keisuke Umakoshi, Masayoshi Onishi, Mutsuhisa Furukawa, Atsunobu Terasoba, Yasuhiro Arikawa, Junko Nagaoka, Maki Nakagawa, Takayuki Inoue, Hiroyuki Kawano, Tomoe Nagano, Mamoru Yamaguchi |
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| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
Aryl Organic Chemistry 1-Alkyne Alkyne chemistry.chemical_element Photochemistry Biochemistry Medicinal chemistry Ruthenium Polymerization Inorganic Chemistry chemistry.chemical_compound Benzonitrile Polypyrazolylborato Vinylidene chemistry Materials Chemistry Reactivity (chemistry) Physical and Theoretical Chemistry Triethylamine Bond cleavage |
| Zdroj: | Journal of Organometallic Chemistry. 700:135-141 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2011.11.031 |
| Popis: | Reactions of (κ 3-polypyrazolylborato)(benzonitrile) rutheniums [RuCl{B(4-Ypz) 4}(PhCN) 2] {4-Ypz; 4-bromo-1-pyrazolyl (Y = Br) and 1-pyrazolyl (Y = H) groups} with terminal alkynes were studied. For the reactions with arylalkynes HC≡C(aryl) in the presence of NEt 3, (arylmethyl)(carbonyl)rutheniums [Ru{CH 2(aryl)}{B(4-Ypz) 4}(CO)(PhCN)] were yielded, indicating alkyne C≡C bond cleavage, whereas in the absence of NEt 3, arylalkyne polymerization proceeded instead of the (arylmethyl)ruthenium formation. Reasonably attributed reaction mechanism shows significant role of the vinylidene intermediates "Ru=C=CH(aryl)". Journal of Organometallic Chemistry, 700, pp.135-141; 2012 |
| Databáze: | OpenAIRE |
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