Go toArchive
Browse byFacets
Bookbag ( 0 )
'1' in keywords Facet   Publication Year 1982  [X]
Results  7 Items
Sorted by   
Section
Publication Year
1982[X]
1Author    Börries Kübel, Werner Knauf, Anna WaltersdorferRequires cookie*
 Title    Synthese von 1.2.4-Oxadiazolyl-und 1.2.4-Thiadiazolylvinylphosphaten und deren biologische Wirkung Synthesis of 1,2,4-Oxadiazolyl-and 1,2,4-Thiadiazolyl vinylphosphates and their Biological Activity  
  Reference    Z. Naturforsch. 37b, 896—901 (1982); eingegangen am 21. Dezember 1981/29. Januar 1982 
  Published    1982 
  Keywords    1, 2, 4-Oxadiazole, 1, 2, 4-Tliiadiazole, Vinylphosphates, Insecticide, Acaricide 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0896.pdf 
 Identifier    ZNB-1982-37b-0896 
 Volume    37 
2Author    Hubert Schmidbaur, Thomas CostaRequires cookie*
 Title    Synthese eines Doppel-Carbodiphosphorans und seiner Vorstufen Synthesis of a Double-Carbodiphosphorane and its Precursors  
 Abstract    The reaction of 1,4-dibromobutane with bis(diphenylphospliino)methane (1) yields two products, one of which is identified as butane-l,4-bis[diphenyl(diphenylphosphinomethyl)-phosphonium bromide] (3 a). Transylidation of this bis-phosphonium salt using two equiv-alents of (CH3)3P = CH2 affords the bis-ylide [CH2CH2P(C6H5)2 = CH-P(C6H5)2]2 (4) in high yields. This conversion can be reversed on treatment of 4 with etheral HCl (to give 3b). Methylation of 4 with CH3I occurs at phosphorus, however, and produces the bis-semiylide salt (5), [CH2CH2P(C6H5)2CHP(C6H5)2CH3]2 2e 2Iö. Transylidation of 5 (again with (CH3)3P = CH2) leads to the bis-carbodiphosphorane (6), [CH2CH2P(C6H5)2 = C = P(C6H5)2CH3]2. All compounds were characterized by elemental and detailed NMR analyses. The second product of the above quaternisation reaction is a cyclic bis-phosphonium salt (2) with a seven-membered ring structure. 
  Reference    Z. Naturforsch. 37b, 677—79 (1982); eingegangen am 9. Februar 1982 
  Published    1982 
  Keywords    1, 4-Dibromobutane, Transylidation, Carbodiphosphorane, Bis-carbodiphosphorane, Ylides 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0677.pdf 
 Identifier    ZNB-1982-37b-0677 
 Volume    37 
3Author    Elli Theodoridou, Pantelis Karabinas, Dimitrios JannakoudakisRequires cookie*
 Title    Elektrochemisches Verhalten der Nitrophenole und ihrer Reduktionsprodukte an Graphitelektroden, II Mechanismus und Kinetik Electrochemical Behavior of the Nitrophenols and their Reduction Products at Graphite Electrodes, II Mechanism and Kinetic  
 Abstract    The mechanism of the electrochemical reactions of l-nitro-2-naphthol, o-nitrophenol and p-nitrophenol at carbon fibre electrodes is investigated in aqueous solutions with pH= 1-10. The above nitrophenols are reduced to the corresponding amines, which are reoxidized to quinone imines. As the quinone imines are partially hydrolysed to quinones, the kinetic of this hydrolysis reaction is also examined. In the case of l-nitro-2-naphthol the hydrolysis rate constant of 1,2-naphthoquinone imine is estimated as a function of pH by cyclic voltammetry. 
  Reference    (Z. Naturforsch. 37b, 97—101 [1982]; eingegangen am 14. September 1981) 
  Published    1982 
  Keywords    Cyclic Voltammetry, Graphite Electrodes, o-Nitrophenol, 1, 2-Naphthoquinoneimine 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0097.pdf 
 Identifier    ZNB-1982-37b-0097 
 Volume    37 
4Author    Cornelia Lensch, Oskar GlemserRequires cookie*
 Title    Darstellung und Reaktionen von S.N-Bi8(heptafluorisopropyl)schwefelfluoridimid Preparation and Reactions of S,N-Bis(heptafluoroisopropyl)sulphurfluoride Imide  
  Reference    Z. Naturforsch. 37b, 401—403 (1982); eingegangen am 8. Dezember 1981 
  Published    1982 
  Keywords    Sulphur-amide, N-hexafluoroisopropyl, S -[2 -chlorine-1, 1, 1, 3, 3, 3 -hexafluoro]isopropyl, Sulphurfluoride-imide, N-heptafluoroisopropyl, S-[2-chlorine-l, l, l, 3, 3, 3-hexafluoro]isopropyl, Sulphur-imide, N-heptafluoroisopropyl, S-dimethoxy 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0401.pdf 
 Identifier    ZNB-1982-37b-0401 
 Volume    37 
5Author    Albini, H. KischRequires cookie*
 Title     
 Abstract    Chromium and tungsten carbonyls react with 3,3,4,4-tetramethyl-l,2-diazetine (1) or its mono-N-oxide (2) to form complexes (l)M(CO)5, (l)2M(CO)4, (l)M2(CO)io, (l)2M2(CO)8, (l)3M2(CO)6 or (2)M(CO)5 and (2)2M(CO)4, resp. In the reactions of 2 some deoxygenation affords complexes of 1 as by-products. The stability of these and other complexes of the N=N group is related to the ring size of the cyclic diazene ligand. 
  Reference    Z. Naturforsch. 37b, 468—472 (1982); received November 13 1981 
  Published    1982 
  Keywords    I, 2-Diazetines, 1, 2-Diazetine-N-oxide, Chromium Complexes, Tungsten Complexes 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0468.pdf 
 Identifier    ZNB-1982-37b-0468 
 Volume    37 
6Author    WolfPeter Fehlhammer, Bartel Klaus, Dagobert Alfons Völkl, AchatzRequires cookie*
 Title    Metallkomplexe funktioneller Isoeyanide, VI [1] Tosylmethyl-, Benzyl-und Benzhydrylisocyanid-Metallverbindungen und ihre Reaktionen mit Nucleophilen und 1.3-Dipolarophilen Metal Complexes of Functional Isocyanides, VI [1] Tosylmethyl-, Benzyl-and Benzhydrylisocyanide Metal Complexes and Their Reactions with Nucleophiles and 1,3-Dipolarophiles  
 Abstract    Metal complexes of the type M(CO)5L (M = Cr, W), MX2L2 (M = Pd, Pt; X = Cl, Br, 1), PtClo(L)PPh3, and [Pt(Cl)(L)(PPh3)2]BF4 have been prepared with L = CNCH2S02C6H4-^CH3, CNCHoPh, and CNCHPho, and reacted with a variety of nucleophiles (NH2CH2C02CH3, CH(CN)2", CH(CN)C02CH3-, OH-) and 1,3-dipolarophiles (CF3CN, CH3O2CCEECCO2CH3, CH2 = CHCN, RNCO (R -CH3, Ph), RCHO (R = i-C3H7, Ph, C6H4-0OH)) to give carbene, a-aminovinyl, and carboxamido complexes, and C2-metallated heterocycles (imidazoles, pyrroles, oxazolos, oxazolines), respectively. Ready de-alkylation occurs of benzhydryl isoeyanide in [Pt(Cl)(CNCHPh2)(PPh3)2]BF4* 
  Reference    Z. Naturforsch. 37b, 1044—1053 (1982); eingegangen am 5. Februar 1982 
  Published    1982 
  Keywords    Transition Metal Complexes of Functionalized Isocyanides, Reactions at Co-ordinated Ligands, Carbene Complexes, 1, 3-Dipolar Cycloadditions 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1044.pdf 
 Identifier    ZNB-1982-37b-1044 
 Volume    37 
7Author    Klaus Burger, Herbert GothRequires cookie*
 Title    Positionsselektivität und Regiochemie bei Abfangreaktionen mit Heterokumulenen Cycloaddition Behaviour of Bis(trifluoromethyl) Substituted Nitrile Ylides [1] Site Selectivity and Regiochemistry of Trapping Reactions with Heterocumulenes  
 Abstract    3,3-bis(trifluoromethyl)-2,2-dihydro-l,4,2-oxazaphosphol-4-enes on thermolysis undergo a 1,3-dipolar cycloreversion reaction with formation of bis(trifluoro-methyl) substituted nitrile ylides and trimethyl phosphate. The nitrile ylides are trapped by N-8ulfinyl aniline, phenyl isocyanate, phenyl isothiocyanate, diphenyl ketene, and carbon disulfide. Site selectivity and regiochemistry of the [3 + 2]cycloaddition reactions are described. The results are compared with those obtained from [3 + 2]cycloaddition reactions of nitrile imines, nitrile oxides, alkyl, and aryl substituted nitrile ylides with heterocumulenes. 
  Reference    Z. Naturforsch. 37b, 473—485 (1982); eingegangen am 30. September 1981 
  Published    1982 
  Keywords    1, 3-Dipolar Cycloreversion Reactions, 2, 2-Dihydro-l, 4, 2-oxazaphosphol-4-enes, Trifluoromethyl Substituted 1, 3-Dipoles, Partially Fluorinated Heterocyclic Compounds 2, 2, 2-Trimethoxy- 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0473.pdf 
 Identifier    ZNB-1982-37b-0473 
 Volume    37