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'Ruthenium Complexes' in keywords Facet   Publication Year 1999  [X]
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1999[X]
1Author    Bernhard Steinmetz, Michael Hagel, WolfdieterA. SchenkRequires cookie*
 Title    Synthesis and Oxidation of Ruthenium Allyl Thioether Complexes Bearing Phosphite and Phosphonite Coligands [1]  
 Abstract    Halfsandwich ruthenium thiolate complexes bearing electron-withdrawing phosphite or phos­ phonite ligands were prepared from [CpRu(PPh3)2(SR)l (R = Ph, CH2Ph, Me) and triph-enylphosphite or (5,5')-bis(binaphthylphosphonito)ethane (bbpe), respectively. Reaction with l-bromo-3-methyl-2-butene in the presence of NH4PF6 gave the corresponding allylthioether complexes [CpRu(PR'3)2(S(R)CH2CH=CMe2)]PF6. Treatment with an excess of dimethyl­ dioxirane (DMD) transformed the triphenylphosphite derivatives into diastereomeric (oxiranyl-methyl)sulfoxide complexes with 18 -80% de. NMR monitoring of the reaction revealed that the oxidant attacks the sulfur atom and the C=C double bond with comparable rates. Sim­ ilar oxidation of the bbpe complexes gave mixtures of four diastereoisomers with ratios of (64 : 15 : 1 3 :8) and (51 : 24 : 15 : 10), respectively. 
  Reference    Z. Naturforsch. 54b, 1265—1271 (1999); received July 2 1999 
  Published    1999 
  Keywords    Ruthenium Complexes, Thioether, Sulfoxide, Epoxide, Dimethyldioxirane 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1265.pdf 
 Identifier    ZNB-1999-54b-1265 
 Volume    54