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21Author    NarendraS. SridharaRequires cookie*
 Title    Thermal Decomposition of P,P-diphenyl-N-benzyl-phosphinothioic Amide and P,P-diphenyl-N-methyl-phosphinothioic Amide  
  Reference    Z. Naturforsch. 33b, 212—213 (1978); received July 1 1977 
  Published    1978 
  Keywords    2, 2, 4, 4, 6, 6-Hexaphenylcyclophosphazatriene, Diphenylphosphinothioic Amide, 113355-Hexaphenyl-1 -methylaminotriphosphazene-5-sulphide, P, P-Diphenyl-N-dimethylphosphinothioic Amide 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0212.pdf 
 Identifier    ZNB-1978-33b-0212 
 Volume    33 
22Author    Ringverengungsreaktionen Von Chinolintrionen, Helga Wittmann, Friedrich GünzlRequires cookie*
 Title    Synthesen von Heterocyclen, CCVIII [1] Zur Chemie der vicinalen Triketone, XI [2]  
 Abstract    -lH,5H-benzo [ij] quinolizine (I) does not react with 2-aminopyridine to give a Schiff base [2], but reacts by ringcontraction to the spiro-indolone 1/1, which can be hydrolysed to l-(2-pyridyl-amino)l,2,5,6-tetrahydro-4H-pyrrolo[3,2,l-ij]quinoline-2-one (2/1). In the same way the reaction of I resp. 1-phenyl-quinolinetrione (LI) with tfert-butylamine in aliphatic alcohols yields by ringcontraction the indolone acid esters 5 a-c. Reaction of I with £er£-butylamine without solvent forms the ringcontracted amide 5c/I. 
  Reference    Z. Naturforsch. 33b, 1540—1546 (1978); eingegangen am 12. Juli 1978 
  Published    1978 
  Keywords    Quinolinetriones, Ringcontractions, 2-Aminopyridine, 2, 3-Diaminopyridine, Zerf-Butylamine l, 2, 3-Trioxo-2, 3, 6, 7-tetrahydro 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1540.pdf 
 Identifier    ZNB-1978-33b-1540 
 Volume    33 
23Author    Herbert Fisch, Hans Pritzkow, Walter SiebertRequires cookie*
 Title    Enthalogenierung von Bis(diisopropylamino-chlorboryl)methan: Lösungsmittelabhängige Bildung eines 1,2,4,5-Tetraborinan-und eines l-Aza-2,4-diborolidin-Derivats Dehalogenation of Bis(diisopropylamino-chloroboryl)methane: Solvent-dependent Formation of a 1,2,4,5-Tetraborinane and of a l-Aza-2,4-diborolidine Derivative  
  Reference    Z. Naturforsch. 43b, 658—664 (1988); eingegangen am 7. Dezember 1987 
  Published    1988 
  Keywords    l, 2, 4, 5-Tetrakis(diisopropylamino-chloroboryl)-l, 2, 4, 5-tetraborinane, l-Aza-2, 4-diborolidine Derivatives 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0658.pdf 
 Identifier    ZNB-1988-43b-0658 
 Volume    43 
24Author    G. Unther Seitz, Johanna SieglRequires cookie*
 Title    Synthese neuer Pyridin-C-nukleoside der 2 ,3 -D i d e s o x y r i b o s e durch "inverse" [4+2]-Cycloaddition Synthesis of Novel Pyridine-C-nucleosides of 2,3-Dideoxyribose by "Inverse" [4+2]-Cycloaddition  
 Abstract    The anomeric imido esters 5 and 6, appropriate precursors for C-nucleoside synthesis, were prepared and utilized as heterodienophiles in a Diels-Alder reaction with inverse electron 
  Reference    Z. Naturforsch. 52b, 851—858 (1997); eingegangen am 22. April 1997 
  Published    1997 
  Keywords    Pyridine-C-nucleosides, "Inverse" [4+2] Cycloadditions, 1, 2, 4-Triazine-C-nucleosides, 2, 3'-Dideoxy-/?-D-ribofuranosyl-pyridines 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0851.pdf 
 Identifier    ZNB-1997-52b-0851 
 Volume    52 
25Author    Werner GosselRequires cookie*
 Title    KARL-HEINZ LINKE, RALF TURLEY  
  Reference    (Z. Naturforsch. 27b, 1005—1006 [1972]; eingegangen am 24. April/ 7. Juni 1972) 
  Published    1972 
  Keywords    sulfuric acid, 2, 2-Dimethyltriazanium salts 
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 TEI-XML for    default:Reihe_B/27/ZNB-1972-27b-1005_n.pdf 
 Identifier    ZNB-1972-27b-1005_n 
 Volume    27 
26Author    Requires cookie*
 Title    Cleavage Reactions o f 5-Arylazo Derivatives o f l-M ethyl-2-benzyl-2-im idazolin-4-ones  
 Abstract    N azm i A b d e l L a t if K a s s a b , A b d e l H a m id H a k h a s h , and S a n n a O sm a n A b d A lla h The 5-arylazo-l-methyl-2-benzyl-2-imidazolin-4-ones (la-c) undergo ring cleavage 
  Reference    (Z. Naturforsch. 30b, 603—605 [1975]; received March 10 1975) 
  Published    1975 
  Keywords    Rearrangement Reaction, 1, 2, 4-Triazinones, Grignard Reaction 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0603.pdf 
 Identifier    ZNB-1975-30b-0603 
 Volume    30 
27Author    NasimH. Pirzada, LindsayA. SummersRequires cookie*
 Title    Chemical Constitution and Activity of Bipyridylium Herbicides, XI 1 A Diquaternary Salt of 2,2' -Oxydipyridine  
 Abstract    A diquaternary salt of 2,2'-oxydipyridine has been prepared using methyl fluoro-sulphonate as quaternising agent. It is unstable at physiological pH values and is reduced at a much lower potential than the bipyridylium herbicides, diquat and paraquat. 
  Reference    (Z. Naturforsch. 31b, 122—123 [1976]; received May 26 1975) 
  Published    1976 
  Keywords    Bipyridylium Salts, Herbicides, 2, 2'-Oxydipyridine 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0122.pdf 
 Identifier    ZNB-1976-31b-0122 
 Volume    31 
28Author    M. M., P. Či, S. InRequires cookie*
 Title    The Preparation of Some Unsymmetrically 2,2' -Disubstituted Stilbenes  
 Abstract    The new unsym m etrically 2,2'-disubstituted stilbenes with NO2 , F, Cl, Br, OCH3 , CH3 and NH2 groups as substituents have been prepared by W it t ig or P e r k i n reactions. The compounds 1 -8 were prepared due to the studies o f fragm entation on electron impact, photochem istry and photoelectron spectroscopy. Their geometrical configuration has been established by X H NMR and IR spectra. 
  Reference    (Z. Naturforsch. 32b, 181—183 [1977]; received October 18 1976) 
  Published    1977 
  Keywords    2, 2'-Disubstituted Stilbenes, Synthesis, Configuration 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0181.pdf 
 Identifier    ZNB-1977-32b-0181 
 Volume    32 
29Author    Annegret Lipka, Hartmut WunderlichRequires cookie*
 Title    Die Kristallstruktur des l:l-Komplexes von Antimontrichlorid und 2.2'-Bipyridin The Crystal Structure of the 1:1 Complex of Antimony Trichloride and 2,2'-Bipyridine  
 Abstract    The crystal structure of the complex compound of SbCL with a chelating bipyridyl group was determined. Sb(CioH8N2)Cl3 crystallizes in the space group P2i/c with a = 818.9(4), b = 695.8(7), c = 2331.3(12) pm, ß = 103.59(4)° and Z = 4 molecules per unit cell. The SbCL fragment is T-shaped with <Sb-Cl> at 254.7 pm. Taking into account also the N atoms of the chelating 2,2'-bipyridyl group (<Sb-N> = 228.1 pm) and an inter-molecular Sb-Cl contact at 334.0 pm the Sb coordination is distorted octahedral. 
  Reference    Z. Naturforsch. 35b, 1548—1551 (1980); eingegangen am 22. August 1980 
  Published    1980 
  Keywords    Stereochemistry, Crystal Structure, Antimontrichloride, 2, 2'-Bipyridine 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1548.pdf 
 Identifier    ZNB-1980-35b-1548 
 Volume    35 
30Author    Gerd Becker, Gudrun Gresser, Werner UhlRequires cookie*
 Title    Acyl-und Alkylidenphosphane, XV [1] 2.2-Dimethylpropylidinphosphan, eine stabile Verbindung mit einem Phosphoratom der Koordinationszahl  
 Abstract    In the presence of small amounts of solid sodium hydroxide, [2,2-dimethyl-l-(trimethyl-siloxy)propylidene]-trimethylsilylphosphine reacts at -f 20 °C to give hexamethyldisil-oxane and 2,2-dimethylpropylidynephosphine (2). In contrast to similar alkylidyne-phosphines this compound is stable at room temperature. The IR and mass spectrum are discussed, and iH, 13 C and 31 P NMR spectral data are given. 
  Reference    (Z. Naturforsch. 36b, 16—19 [1981]; eingegangen am 3. Oktober 1980) 
  Published    1981 
  Keywords    Alkylidynephosphines, 2, 2-Dimethylpropylidynephosphine, P-C Triple Bond 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0016.pdf 
 Identifier    ZNB-1981-36b-0016 
 Volume    36 
31Author    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- 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0473.pdf 
 Identifier    ZNB-1982-37b-0473 
 Volume    37 
32Author    Siegfried PohlRequires cookie*
 Title    Synthesis and Crystal Structure of a Polymeric Adduct of 2,2'-Dipyridil and Iodine: CioHgN^  
 Abstract    The reaction of 2,2'-dipyridil with iodine (I2; molar ratio 1:3) in CH2C12 solution yields the polymeric complex 2,2'-dipyridil(I2)3. The crystal structure of the compound was determined from single crystal X-ray data (monoclinic, C2/c, a — 3215.0(16), b = 439.9(1), c = 1824.1(9) pm, ß = 130.79(3)°, Z = 4). 2,2'-Dipyridil(I2)3 forms infinite chains of alternating Iß units and bifunctional dipyri-dil molecules. 
  Reference    Z. Naturforsch. 38b, 1535—1538 (1983); eingegangen am 12. Juli 1983 
  Published    1983 
  Keywords    2, 2'-Dipyridil(I2)3, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1535.pdf 
 Identifier    ZNB-1983-38b-1535 
 Volume    38 
33Author    E. Hanecker, H. NöthRequires cookie*
 Title    Beiträge zur Chemie des Bors, 163 [1] Die Molekülstruktur zweier Silaborazine Contributions to the Chemistry of Boron, 163 [1] The Molecular Structure of Two Silaborazines  
  Reference    Z. Naturforsch. 40b, 717—721 (1985); eingegangen am 4. Januar 1985 
  Published    1985 
  Keywords    2, 3, 4, 5, 6-Pentamethyl-l, l-diphenyl-l-silaborazine, 2, 4, 5, 6-Tetramethyl-l, l, 3, 3-tetraphenyl-l, 3-disilaborazine, X-Ray Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0717.pdf 
 Identifier    ZNB-1985-40b-0717 
 Volume    40 
34Author    ShyamK. Singh, LindsayA. SummersRequires cookie*
 Title      
 Abstract    Departm ent o f Chem istry, The U niversity o f N ew castle, Reaction o f 2,3'-bipyridine with dibrom oalkanes affords both r-brom oalkyl-2,3'-bipyridinium bromides and l',l"'-(alkanediyl)-bis-2,3'-bipyridinium dibromides. The latter diquaternary salts react with dimethyl sulfate to afford r,l'" -(alk anediyl)-b is-(l-m ethyl-2,3'-bip yridinium) tetra­ quaternary salts which are reduced to diradical dications at potentials (E 0) o f about —0.47 V to -0 .6 2 V. 
  Reference    Z. Naturforsch. 41b, 239 (1986); received Septem ber 19 1985 
  Published    1986 
  Keywords    2, 3'-Bipyridinium Tetraquaternary Salts, Reduction Potentials, Diradical Dications 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0239.pdf 
 Identifier    ZNB-1986-41b-0239 
 Volume    41 
35Author    Richard Neidlein, Dagmar Knecht, Alfred Gieren, Catalina Ruiz-PérezRequires cookie*
 Title      
 Abstract    The synthesis of 1 by reaction of phenanthro[9,10-c]-l,2,5-selenadiazole with ethylmagnesium-bromide and TeCI 4 is described; the X-ray structure analysis is reported. 
  Reference    (Z. Naturforsch. 42b, 84—90 [1987]; eingegangen am 9. August 1986) 
  Published    1987 
  Keywords    Chalkogen-Diimides, 1, 2, 5-Telluradiazole, X-Ray 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0084.pdf 
 Identifier    ZNB-1987-42b-0084 
 Volume    42 
36Author    Josef Hahn, Tina NatanielRequires cookie*
 Title    Synthese und Eigenschaften von 3,6-Diorgano-3,6-dithio  
 Abstract    l,2,4,5,3,6-tetrathiadiphosphorinanen; eine neue Möglichkeit zur Knüpfung von S—S-Bindungen Synthesis and Properties of 3,6-D iorgano-3,6-dithio-l,2,4,5,3,6-tetrathiadiphosphorinanes; a New Possibility of Forming S—S Bonds 
  Reference    Z. Naturforsch. 42b, 1263 (1987); eingegangen am 15. Mai 1987 
  Published    1987 
  Keywords    3, 6-Diorgano-3, 6-dithio-l, 2, 4, 5, 3, 6-tetrathiadiphosphorinanes, 3, 5-Dimethyl-3, 5-dithio-l, 2, 4, 3, 5-trithiadiphospholan, Heterocycles, Formation of S -S Bonds 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1263.pdf 
 Identifier    ZNB-1987-42b-1263 
 Volume    42 
37Author    Anton Meller, Christoph Kümmel, Mathias NoltemRequires cookie*
 Title    Monomere Iodide von o-substituierten Aryl-Gallium-und Indiumverbindungen Monomeric Iodides of o-Substituted Aryl Gallium and Indium Compounds  
 Abstract    Monomerie diiodides of 2,4,6-tri(rm -butyl)phenyl = (s-M es), 2,4,6-triisopropylphenyl = (Trip)-and 2,4-di-terf-butyl-6-methylphenyl = (D BM P)-gallium and -indium were prepared by the reaction of the lithiated aryls with MI3 (M = Ga, In) in hexane/Et20 . s-M esInI2 (1), s-M es2InI (2), s-M esGaI2 (3), s-M es2GaI (4), Trip2InI (5) and (D B M P)2InI (6) were obtained and characterized by their mass and NM R spectra (!H, 13C), and/or by elem ental analyses. An X-ray crystal structure analysis was carried out for 1. 
  Reference    (Z. Naturforsch. 51b, 107—111 [1996]; eingegangen am 6. Juni 1995) 
  Published    1996 
  Keywords    Galliumiodides, Indiumiodides, 2, 6-Disubstituted Aryl 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0107.pdf 
 Identifier    ZNB-1996-51b-0107 
 Volume    51 
38Author    Tristram Chivers, Masood Parvez, Peter ZoricakRequires cookie*
 Title    Preparation and X-Ray Structure of 4-BrC6H4CNSC(Cl)N  
 Abstract    The title compound was obtained in 82% yield by the intramolecular cyclization of 4-BrC6H4C(NSCCl3)[N(SiMe3)2] in CH2CI2 at 23°C. It crystallizes in the triclinic system, space group PI, a = 7.957(3) Ä, b = 10.864(5) A, c = 5.625(1) A, a = 95.94(3)°, ß = 97.79(2)°, 7 = 100.72(3)°, V = 469.2(3) A3, and Z -2. The bond lengths of the planar C2N2S ring indicate partial 7r-delocalization. 
  Reference    Z. Naturforsch. 52b, 557—559 (1997); received September 5 1996 
  Published    1997 
  Keywords    Crystal Structure, 1, 2, 4-Thiadiazole, Intramolecular Cyclization 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0557.pdf 
 Identifier    ZNB-1997-52b-0557 
 Volume    52 
39Author    Tristram Chivers, Xiaorong Li, Masood ParvezRequires cookie*
 Title    Preparation and X-Ray Structure of 3,5-Dimethyl-1,4-dichloro-1,2,6- thiadiazine-1 -oxide  
 Abstract    The title compound was obtained by the reaction of 3,5-dimethyl-2//-l,2,6-thiadiazine-l,l-dioxide with PCI5 in chloroform. It crystallizes in the monoclinic system, space group P2\/c, a = 7.521(7) A, b = 8.400(4) A, c = 13.908(4) Ä, ß = 100.35(4)°, V = 864.4(8) A3, and Z = 4. The S(VI) atom lies 0.43 A out of the plane of the 7r-delocalized NCCCN unit. The mean S-N bond distance is 1.569(3) A. 
  Reference    Z. Naturforsch. 53b, 532—534 (1998); received December 18 1997 
  Published    1998 
  Keywords    Crystal Structure, 1, 2, 6-Thiadiazines, Sulfanuric Chloride 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0532.pdf 
 Identifier    ZNB-1998-53b-0532 
 Volume    53 
40Author    Bettina Eichhorn, Heinrich NöthRequires cookie*
 Title    New Diazasilaphosphetidines and their Precursors  
 Abstract    A series of aminosilanes (R 'H N bSiR : have been prepared. In case of bulky substituents R' the aminolysis of Ph^SiCb stops at the (R'HN)ClSiPh2 stage. Replacement of the Cl atom is achieved with LiNHR' which allows the synthesis o f mixed bisaminosilanes (R'HN)(R"HN)SiPh2. The X-ray structures of three of these compounds have been determined. There are no intermolecular N-H -N hydrogen bonds in these compounds in the solid state. Several 1,3,2,4-diazaphosphetidines have been synthesized using bis(N-lithioamino)silanes and bis(N-lithioamino)phosphanes . Amongst these the heterocycle 18 possesses an almost planar four membered N iSiP ring system. 
  Reference    Z. Naturforsch. 55b, 352—360 (2000); received January 18 2000 
  Published    2000 
  Keywords    Bis(monoorganylamino)diorganylsilanes, 1, 3, 2, 4-Diazasilaphosphetinides 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-0352.pdf 
 Identifier    ZNB-2000-55b-0352 
 Volume    55 
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