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'Synthesis' in keywords Facet   Publication Year 1979  [X]
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1979[X]
1Author    AbdelKader Fathy, El-Sayed Amer, Mohamed Afsah, MohamedAbbas Tawfik El-Zimaity, MetwallyRequires cookie*
 Title    Synthesis of Hexahydro-bisfbenzo-dipyrazolones, benzo-diazepinone] and Dithiopyrimidoquinazolinetetrone  
 Abstract    A new series of hexahydro-bis-benzodipyrazolones (2a-e) were obtained by the inter-action of 1 with hydrazines. These pyrazolones underwent coupling reaction with different diazonium salts to give 7a-g. Compound 1 when treated with acid hydrazides gave 3 a, b, and when subjected to Japp-Klingemann reaction in alkaline medium gave 6a-e. The hexahydro-bis-benzodiazepine (8), and dithiopyrimidoquinazolinetetrone (10) were obtained by the interaction of 1 with o-phenylenediamine and thiourea respectively. 
  Reference    (Z. Naturforsch. 34b, 95—98 [1979]; received June 5 1978) 
  Published    1979 
  Keywords    Pyrazolones, Diazonium Salts, Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0095.pdf 
 Identifier    ZNB-1979-34b-0095 
 Volume    34 
2Author    P. Rodighiero, A. Guiotto, P. Manzini, G. PastoriniRequires cookie*
 Title    Synthesis of Isoponcimarin  
 Abstract    Synthesis of isoponcimarin, 7-(3'-methyl-2',3'-epoxy-butiloxy)-8-(3"-methyl-2"-oxo-butyl) coumarin, a natural coumarin isolated from Poncirus trifoliata L., was obtained starting from acetyl osthenol. From the intermediate 7-acetoxy-8-(3'-methyl-2'-oxobutyl) coumarin, the coumarin derivatives isomeranzin and dihydrooroselone were also prepared. In a previous paper [1] we reported the isolation and identification from unripe fruits of Poncirus trifoliata L. (fam. Rutaceae; subfam. Aurantioideae) of a new coumarin, which was named isoponcimarin. This compound is a neutral coumarinic derivative, optically active [a]»j5 — 6,94° (CHCls), m.p. 85 °C (from w-hexane), violet-blue fluorescent to UV light (365 nm) and has molecular formula C18H22O5. On the basis of the chemical and spectroscopical evi-dences to isoponcimarin was assigned the structure 
  Reference    Z. Naturforsch. 34b, 1010—1014 (1979); received February 19 1979 
  Published    1979 
  Keywords    Isoponcimarin, Isomeranzin, Dihydrooroselone, Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1010.pdf 
 Identifier    ZNB-1979-34b-1010 
 Volume    34 
3Author    Antonios Antoniadis, Udo KunzeRequires cookie*
 Title    Darstellung von Triphenylsilyl-diphenylphosphin * Synthesis of Triphenylsilyl Diphenylphosphine  
  Reference    (Z. Naturforsch. 34b, 116—117 [1979]; eingegangen am 29. August/25. September 1978) 
  Published    1979 
  Keywords    Syntheses, Triorganylelement(IVb)diorganylphosphines, Triphenyltindiphenylphosphine, Triphenylsilyldiphenylphosphine 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0116_n.pdf 
 Identifier    ZNB-1979-34b-0116_n 
 Volume    34 
4Author    Manfred Zabel, Sigrid Wandinger, Klaus-Jürgen RangeRequires cookie*
 Title    Ternäre Chalkogenide M3M2'X2 mit Shandit-Struktur Ternary Chalcogenides M3M2'X2 with Shandite-Type Structure  
 Abstract    Metal-rich ternary chalcogenides M3M2'X2 (M = Ni, Co, Pd, Rh; M' = In, Tl, Pb, Sn; X = S, Se) with Shandite-type structure were synthesized from mixtures of the elements and/or binary components. A single-crystal investigation on Co3ln2S2 verifies the rhombo-hedral unit cell of Shandite-type compounds, originally postulated by Peacock and McAndrew (Crystal data for Co3ln2S2: Rhombohedral, space group R3m; a = 549,31 (6) pm, a = 57.89°, Z= 1; 3 Co in 3d, 1 In(l) in la, 1 In(2) in lb, 2 S in 2c with x = 0.2790). 
  Reference    Z. Naturforsch. 34b, 238—241 (1979); eingegangen am 20. Oktober 1978 
  Published    1979 
  Keywords    Metal-rich Ternary Chalcogenides, Shandite-type, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0238.pdf 
 Identifier    ZNB-1979-34b-0238 
 Volume    34 
5Author    Friedhelm Lötz, Udo Kraatz, Friedhelm KörteRequires cookie*
 Title    Synthese Pyridin-analoger Tetrahydrocannabinol Synthesis of Pyridine-analogous Tetrahydrocannabinols  
 Abstract    Starting from 4-methylpyridine Si 3-B/ZR-zl 8 -tetrahydrocannabinol-analogous (2d) was prepared. The reaction sequence also includes the first synthesis of a 6H-benzo(4,5)-pyrano(2,3-c)-pyridin-6-on, a novel ring-system. The proposed structures were supported by spectroscopic data (X H NMR, IR, MS). 
  Reference    Z. Naturforsch. 34b, 306—312 (1979); eingegangen am 7. September 1978 
  Published    1979 
  Keywords    Aza-Cannabinoids, Benzopyrano Pyridines, Structural Identification, Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0306.pdf 
 Identifier    ZNB-1979-34b-0306 
 Volume    34 
6Author    Gert Bauer, Gerhard HageleRequires cookie*
 Title    Reaktionen polyhalogenierter Cyclobutene mit Trimethylphosphit Reactions of Polyhalogenated Cyclobutenes with Trimethylphosphite  
 Abstract    Structure and reactive behaviour of polyhalogenated cyclobutenes towards trimethyl-phosphite are studied in detail. Stable phosphoranes RP(F)(OCH3)3 as intermediates of Arbuzov-type reactions are obtained. Controlled decomposition of phosphoranes leads to highly reactive c-yclobutenyl substituted phosphonic acid esters RP(0)(0CH3)2. Substitu-tion reactions at aliphatic and vinylic positions of RP(0)(0CH3)2 are observed. Biphos-phonic acid esters R[P(0)(0CH3)2]2 are synthesized. Some routes to perhalogenated cyclo-butenes are described. NMR and MS data for the hitherto unknown cyclobutenyl-sub-stituted organophosphorus compounds are given. 
  Reference    Z. Naturforsch. 34b, 1252—1259 (1979); eingegangen am 3. April/10. Mai 1979 
  Published    1979 
  Keywords    Phosphoranes, Phosphonic Acid Esters, Synthesis, NMR 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1252.pdf 
 Identifier    ZNB-1979-34b-1252 
 Volume    34 
7Author    Lothar Steiling, Ulrich WannagatRequires cookie*
 Title    Sila-Pharmaka, 15. Mitt. [1] Synthese und Eigenschaften des Sila-Pridinols Sila-Drugs, 15th Communication [1] Synthesis and Properties of Sila-Pridinol  
 Abstract    Synthesis of the silicon analogue VI b of the drug pridinol and of its homologue VI a was achieved via eq. (l-5b) (Scheme 1). The novel compounds IVa-VIb are described in their properties and confirmed in their structures (Tables I-IV). Some preliminary pharma-cological investigations suggest spasmolytical effects of sila-pridinol seeming to be somewhat better than those of pridinol itself. 
  Reference    Z. Naturforsch. 34b, 1413—1417 (1979); eingegangen am 25. Mai 1979 
  Published    1979 
  Keywords    Organosilicon Compounds, Syntheses, Chemical and Pharmacological Properties 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1413.pdf 
 Identifier    ZNB-1979-34b-1413 
 Volume    34 
8Author    Richard Korswagen, Klaus Weidenhammer, ManfredL. ZieglerRequires cookie*
 Title    Darstellung und Charakterisierung von "Nitrenkomplexen"  
 Abstract    des Molybdän und Wolfram der Zusammensetzung [(^-C5H5)OM]2(/*-NCOOC2H5)2 (M = Mo, W) und [(^-C5H5)0Mo]2(^-NC02C2H5)(^-0) Synthesis and Characterization of "Nitrene Complexes" of Molybdenum and Tungsten of Composition [(^-C5H5)0M]2(/<-NC02C2H5)2 (M = MO, W) and [(^-C5H5)0Mo]2(^-NC00C2H5)Gu-0) The photolytical reactions of 7? 5 -C5H5Mo(CO)3CH3 (1) or 7? 5 -C5H5W(CO)3CH3 (2) with N3C02C2H5 (3) in CH2C12 yield the "nitrene" complexes [(^-CsHsJMoOJ^-NCC^Hsfe (4), [(r? 5 -C5H5)W0]2(/u-NC02C2H5)2 (5) and [(^-CsHsJMoOM^-NCO^HsM^-O) (6) together with some *? 5 -C5H5Mo(CO)3Cl (7) and ^ 5 -C5H5W(CO)3Cl (8), proving that the solvent takes part in the reaction. Compounds 4, 5 and 6 contain bridging imido groups, arising from the capture of probably free nitrenes NC02C2Hs by organometallic species. Evidence for the presence of free nitrenes in the reaction medium is provided by the isolation of urethane (9), tetrachlorethene (10), 7 and 8 as secondary products. 
  Reference    Z. Naturforsch. 34b, 1507—1511 (1979); eingegangen am 28. Juni/13. August 1979 
  Published    1979 
  Keywords    Synthesis, Characterization of Nitrene Complexes, Molybdenum 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1507.pdf 
 Identifier    ZNB-1979-34b-1507 
 Volume    34 
9Author    G. Peters, W. PreetzRequires cookie*
 Title    Synthese und Eigenschaften des Oktafluorodirhenat(III) -anions, [Re2F8] 2 - Synthesis and Properties of the Octafluorodirhenate(III) Anion, [Re2F8] 2 ~  
 Abstract    The reaction of [Re2Cl8] 2_ and F~, both dis-solved as ion pairs with [(n-CiH9)4N] + in nearly anhydrous CH2CI2 gives elder-coloured [(n-C4H9)4N]2[Re2F8] • 4H2O. On Laser irradia-tion of the solid complex at 80 K resonance Raman spectra are observed, exhibiting up to five overtones of vi = 320 cm -1 (Re-Re, Aig) and combination tones with v2 = 625 cm -1 (Re-F, Aig). The spectroscopic constants are u>i = 319,6 ± 0.6 cm -1 , and xn = —0,45 ± 0,05 cm-1 . The Re-Re bond energy is estimated to be 162 ± 20 kcal/mol. 
  Reference    Z. Naturforsch. 34b, 1767—1768 (1979); eingegangen am 15. August 1979 
  Published    1979 
  Keywords    Octafluorodirhenate(III), Synthesis, Resonance-Raman Effect 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1767_n.pdf 
 Identifier    ZNB-1979-34b-1767_n 
 Volume    34 
10Author    R. Tacke, M. Strecker, W. S. Sheldrick, E. Heeg, B. Berndt, K. M. KnapsteinRequires cookie*
 Title    Sila-Pharmaka, 14. Mitt. [1] Darstellung und Eigenschaften sowie Kristall-und Molekülstruktur von Sila-Difenidol Sila-Drugs, 14 th Communication [1] Preparation and Properties as well as Crystal and Molecular Structure of Sila-Difenidol  
 Abstract    Sila-difenidol (6 b), a sila-analogue of the drug difenidol (6 a), was synthesized according to Scheme 1. 6 b and its new precursors 3 and 5 were characterized by their physical and chemical properties, and their structures confirmed by elementary analyses, *H NMR and mass spectroscopy. 6 b crystallizes orthorhombic P 2i 2i 2i with a — 11.523(1), b = 14.366(4), c = 11.450(1) A, Z = 4, Dber = 1.14 gcm-3. The structure was refined to fi = 0.050 for 1897 reflexions. A strong nearly linear intramolecular 0-H---N hydrogen bond of 2.685 A is observed. The anticholinergic, histaminolytic and musculotropic spasmolytic activities of 6 a and 6 b are reported. 
  Reference    Z. Naturforsch. 34b, 1279—1285 (1979); eingegangen am 16. März 1979 
  Published    1979 
  Keywords    Sila-Difenidol, Syntheses, Crystal Structure, Molecular Structure, Biological Activity 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1279.pdf 
 Identifier    ZNB-1979-34b-1279 
 Volume    34 
11Author    Z. NaturforschRequires cookie*
 Title      
  Reference    Z. Naturforsch. 34b, 451—455 (1979); eingegangen am 15. November 1978 
  Published    1979 
  Keywords    Nickel(II)-tetrasulfido Complexes, Platinum(II)-tetrasulfido Complexes, Elemental Sulfur, Sodium Polysulfides, Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0451.pdf 
 Identifier    ZNB-1979-34b-0451 
 Volume    34