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1999 (2)
1997 (1)
1Author    WolfdieterA. Schenk, Bernhard Steinmetz3, Michael Hagel3, Waldemar Adamb, ChantuR. Saha-MöllerbRequires cookie*
 Title    Oxyfunctionalization of Allyl Thioether Ruthenium Complexes with Dimethyldioxirane [1]  
 Abstract    Allyl thioether complexes [CpRu(P-P)(SRR')lPF6 (P-P = Ph2PCH2PPh2 (dppm), PIitPCtH-iPPI^ (dppe), R = Me, Et, Ph, R' = 3-propenyl, 3-cyclohexenyl, 2-methyl-2-buten-4-yl) and [CpRu(chir)(SRR')]PF6 (chir = (S,S)-Ph2PCHMeCHMePPh2, R = Me, CH2Ph, R' = 2-methyl-2-buten-4-yl) are obtained from the corresponding thiolate complexes by reaction with the appropriate allyl bromide. Careful oxidation with dimethyldioxirane (DMD) gave the allyl sulfoxide complexes [CpRu(P-P)(MeS(0)CH2CH=CH2)]PF6 (P-P = dppm, dppe). Double ox­ idation to the corresponding sulfinylmethyl epoxide complexes can be readily achieved with an excess of DMD. Oxidation of the chir complexes proceeds with only moderate diastereoselectiv-ity. The structure of the (/?, R/S, S) diastereomer of [CpRu(dppm)(MeS(0)CH2CHCH2 0)]PF6 was determined: monoclinic space group P2]/c (No. 14), a = 11.21(2), b = 16.762(9), c = 18.45(4) A, ß = 94.4(1)°, Z = 4. For a representative example, the decomplexation of the sulfoxide-epoxide ligand by sodium iodide in acetone was demonstrated. 
  Reference    Z. Naturforsch. 52b, 1359—1371 (1997); received September 9 1997 
  Published    1997 
  Keywords    Ruthenium Complexes, Sulfoxide, Epoxide, Dimethyldioxirane, Structure 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1359.pdf 
 Identifier    ZNB-1997-52b-1359 
 Volume    52 
2Author    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 
3Author    JamesE. Oliver3, JosephC. Dickensb, Marina Zlotinac, VictorC. Mastrod, GalinaI. Yurchenko6Requires cookie*
 Title    Sex Attractant of the Rosy Russian Gypsy Moth (Lymantria mathura Moore)  
 Abstract    We report identification of the sex attractant of the rosy Russian gypsy moth, Lymantria m athura Moore. Two compounds, Z,Z,Z-3,6,9-nonadecatriene 1 and its monoepoxide Z,Z-(95,10/?)-9,10-epoxy-3,6-nonadecadiene 4a, have been identified from abdominal tip ex­ tracts of female moths based on coupled gas chromatography/electroantennogram detector responses and dose response curves. Single cell recordings showed that only one of the mo­ noepoxide enantiomers (S,R) was active. In field tests, both the (5,/?)-monoepoxide and the racemate were active. This type of pheromone system, unusual for a Lymantriid, is more typical of those found in the families Arctiidae, Noctuidae and Geometridae. 
  Reference    Z. Naturforsch. 54c, 387—3 (1999); received January 21/March 1 1999 
  Published    1999 
  Keywords    Pheromone, Lymantriid, Epoxide, Triene, Gypsy Moth 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0387.pdf 
 Identifier    ZNC-1999-54c-0387 
 Volume    54