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Inne
Catalytic transformation of phenylacetylene mediated by phosphine-free ruthenium alkylidene complexes.
Autorzy
Rok wydania
2015
Czasopismo
Journal of Organometallic Chemistry
Numer woluminu
786
Strony
31-39
DOI
10.1016/j.jorganchem.2015.03.025
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Phosphine-free ruthenium alkylidene complexes, [RuCl2(=CH-o-OiPrC6H4)(IMesH2)], [Ru(CF3CO2)2(=CH-o-OiPrC6H4)(IMesH2)], and [RuCl2(=CHPh)(3-Br-py)2(IMesH2)], were found as catalyst precursors for non-metathesis transformations of phenylacetylene, e.g. cyclotrimerization and dimerization. Selective product formation was affected by modulating the coordination sphere of the catalyst and temperature. An NMR study under various experimental conditions and DFT calculations taken together permitted the conclusion that the degradation of the alkylidene complex took place in the initial step, regardless of the manner of alkyne addition.
Słowa kluczowe
[2+2+2] cycloaddition, dimerization, Alkylidene ruthenium catalyst, Phenylacetylene, DFT calculation
Adres publiczny
http://dx.doi.org/10.1016/j.jorganchem.2015.03.025
Strona internetowa wydawcy
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