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101Author    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 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1044.pdf 
 Identifier    ZNB-1982-37b-1044 
 Volume    37 
102Author    Yvonne Nagel, Wolfgang BeckRequires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, XLIII [1] Metallkomplexe mit ungeschützten acyclischen Monosaccharid-Derivaten (Amin-, Oxim-, Schiffbase-, Thiazolidin-und 1,3-Dithian-Liganden) Metal Complexes with Biologically Important Ligands, XLIII [1] Metal Complexes with Unprotected Acyclic Derivatives of Monosaccharides (Amine, Oxime, Schiffbase, Thiazolidine and 1,3-Dithiane Ligands)  
 Abstract    The synthesis and spectroscopic data of palladium (II), platinum (II), nickel(II), cobalt(II), copper(II) and gold(I) complexes with D-glucose oxime, 2-amino-2-deoxy-D-glucose oxime, 1.2-diam ino-l,2-deoxy-D-glucitole, L-cysteine-D-glucose, D-glucose trim ethylene m ercaptale. Schiffbases from l,2-diam ino-l,2-deoxy-D -glucitole and acetylacetone or from D-glucosone and 1.3-diaminopropane are reported. 
  Reference    Z. Naturforsch. 41b, 1447—1454 (1986); eingegangen am 7. Juli 1986 
  Published    1986 
  Keywords    Derivatives of Polyalcohols, Schiffbase, Thiazolidine, 1, 3-Dithiane Complexes of Platinum, Palladium, Nickel and Cobalt 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1447.pdf 
 Identifier    ZNB-1986-41b-1447 
 Volume    41 
103Author    D. Ieter Fenske, Christina Ergezinger, Kurt DehnickeRequires cookie*
 Title    Crystal Structure of l,l-D ichloro-3,5- diphenyl-4-H-l,2.4,6-/.4-selenatriazine, SeCl2C2N 3H (C 6H 5)2  
  Reference    Z. Naturforsch. 44b, 857—8 (1989); eingegangen am 15. Februar 1989 
  Published    1989 
  Keywords    1, l-D ichloro-3, 5-diph en yl-4-H -l, 2, 46-Ä4-selenatriazine, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-0857_n.pdf 
 Identifier    ZNB-1989-44b-0857_n 
 Volume    44 
104Author    N. Orbert Auner, Erika PenzenstadlerRequires cookie*
 Title    Silaheterocyclen, XVII Synthese und Cycloadditionsreaktionen neuartiger, aminocyclischer Silaethene [1] Silaheterocycles, XVII Synthesis and Cycloaddition Reactions of Novel Amino Cyclic Silenes [1]  
 Abstract    The silene 2 is formed by reacting 2-chloro-l,3-bis(trimethylsilyl)-2-vinyl-1,3-diaza-2-silacyclopentane (5) with LiBu' in «-pentane in the tem perature range from -1 0 to +10 °C. The reaction primarily leads to the corresponding a-lithio adduct 6 by addition of the Li-organyl to the vinyl group o f 5; subsequent 1,2-LiCl elimination yields 2 as an intermediate. 2 can be trapped by polar reagents M e3SiX (X = OMe, 0 S 0 2C F 3) as well as by organic dienes which add across the Si = C bond; in the absence of trapping agents, trisilacyclohexane 7 is isolated. The cycloaddition behaviour of 2 is best described by the two mesomeric formulae (a) and (ß), with competitive [4+2] and [2 + 2] addition routes: While with butadienes and norbor-na-2,5-diene the [2 + 2] products are formed mainly in a multiple step reaction via zwitterionic intermediates (1,4 dipoles), the ratio o f the [4+2]/[2 + 2] derivatives from 2 and cyclohexa-1,3-diene becomes nearly equivalent. 2 is thus quite com parable in its reactivity to dichloro-neopentylsilene, Cl2Si = C H C H 2Bu'. 
  Reference    Z. Naturforsch. 47b, 795—804 (1992); eingegangen am 25. November 1991 
  Published    1992 
  Keywords    Silaheterocycles, Synthesis, 1, 3-Bis(trimethylsilyl)-1, 3-diaza-2-silacyclopentane, F orm ation o f Silenes, Cycloaddition Reactions 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0795.pdf 
 Identifier    ZNB-1992-47b-0795 
 Volume    47 
105Author    Neda, Michael Farkens, Holger Thönnessen, PeterG. Jones, Reinhard SchmutzlerRequires cookie*
 Title    Zur Chemie der l,3,5-Triaza-2-phosphorinan-4,6-dione. Teil X*. Umsetzungen von 2-Hydro  
 Abstract    l,3,5-trimethyl-l,3,5-triaza-2-oxo-2A4-phosphorinan-4,6-dion mit Triazin-Derivaten sowie mit einigen Aldehyden Chemistry of the l,3,5-Triaza-2-phosphorinan-4,6-diones. Part X*. Reactions of 2-H ydro-1,3,5-trim ethyl-1,3,5-triaza-2-oxo-2A4-phosphorinan-4,6-dione with Triazine Derivatives and with Some Aldehydes Ion 
  Reference    Z. Naturforsch. 50b, 1833—1 (1995); eingegangen am 8. Mai 1995 
  Published    1995 
  Keywords    1, 3, 5-Trimethyl-Substituted l, 3, 5-Triaza-2A 4 -phosphorinan-4, 6-diones, NM R Spectra, Mass Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1833.pdf 
 Identifier    ZNB-1995-50b-1833 
 Volume    50 
106Author    Z. NaturforschRequires cookie*
 Title    Elektronentransfer und Ionenpaar-Bildung  
 Abstract    , 47 [1] Titrationen von 1,2,4,5-Tetracyanbenzol und 7,7,8,8-Tetracyan-/;-chino-dimethan mit Natriummetall in aprotischen Lösungen E le ctro n T ran sfer an d Ion P air F o rm atio n , 47 [ 1 ] T itratio n s o f 1,2 ,4 ,5 -T etracy an o b en zen e and 7 ,7 ,8 ,8 -T etracy an o -/?-q u in o d im eth an e w ith S o d iu m M etal in A p ro tic S o lu tio n s H an s B ock*, M a rk u s K leine 
  Reference    Z. Naturforsch. 51b, 1215—1221 (1996); eingegangen am 25. Januar 1996 
  Published    1996 
  Keywords    1, 2, 4, 5-Tetracyanobenzene, 7, 7, 8, 8-Tetracyano-/?-quinodimethane, Sodium Metal Reduction, UV/VIS Spectra 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1215.pdf 
 Identifier    ZNB-1996-51b-1215 
 Volume    51 
107Author    VasilyRequires cookie*
 Title    Chemistry of the l,3>5-Triaza-2-phosphorin-4,6-diones, Part XII*. Synthesis and Characterization of 2-PhenyI-2-(/?-tolylthio)-l,3?5- trimethyI-l,3,5-triaza-4,6-dione-2-phosphorinonium Salts  
 Abstract    A . P in ch u k , Io n N e d a , C h ristian M üller, H o lg e r T h ö n n e ss e n , P e te r G. Jones, R e in h a rd S chm utzler The reaction of l,5-bis(trimethylsilyl)-l,3.5-trimethylbiuret (1) with/M olylsulfenyl chloride (2) furnished l-(/?-tolylthio)-5-trimethylsilyl-l,3,5-trimethylbiuret (3). In the reaction of 3 with phenyldichlorophosphine, 2-phenyl-2-(/?-tolylthio)-l,3,5-trimethyl-l,3,5-triaza-4,6-dione-2-phosphorinonium chloride (4) was formed. The same product was obtained from the reac­ tion of 2-phenyl-l,3,5-trimethyl-l,3,5-triaza-2/.3-phosphorin-4,6-dione (6) with p-tolylsulfenyl chloride (2). Compound 4 was isolated and characterized in the form of the hexachloroanti-m onate (4a). The spirophosphorane 2-phenyl-l,3,5-trimethyl-l,3,5-triaza-7,10-dioxa-8,9-perchlorobenzo-2As-phosphaspiro-[4.5]decan-4,6-dione (7) was prepared by the reaction of 4 with tetrachloroorthobenzoquinone. The new products were characterized by 'H -and 13C NMR spectroscopy, elemental analysis, 31P NMR spectroscopy in the case of 4a. 6 and 7, and mass spectrometry (4a). Single-crystal X-ray structural analyses of compounds 4a and 7 were conducted. The phosphorus atom of 4a has the expected tetrahedral geometry, with a rather short P-S bond of 204.9(2) pm. In 7 the geometry at phosphorus is almost ideal trigonal bipyramidal. Weak hydrogen bonds are formed from a C (:0) group to deuterochloroform of solvation. 
  Reference    Z. Naturforsch. 51b, 1494—1500 (1996); received February 13 1996 
  Published    1996 
  Keywords    1, 3, 5-Trimethyl-Substituted 1, 3, 5-Triaza-4, 6-dione-2-phosphorinonium Derivatives, Intram olecular Rearrangem ent, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1494.pdf 
 Identifier    ZNB-1996-51b-1494 
 Volume    51 
108Author    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 
109Author    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 
110Author    Michael Farkens, ThomasG. Meyer, Ion Neda, R.Alf Sonnenburg, Christian Müller, AxelK. Fischer, PeterG. Jones, Reinhard SchmutzlerRequires cookie*
 Title    Zur Chemie der l,3,5-Triaza-2-phosphinan-4,6-dione. Teil VI*. Darstellung von l,3>5-Triaza-2 A3  
 Abstract    , l,3,5-Triaza-2 A4-und 1,3,5-T riaza-2 A5-phosphinan-4,6-dionen Chemistry o f the l,3,5-Triaza-2-phosphinane-4,6-diones. Part VI. Synthesis o f l,3,5-Triaza-2^3-, 1,3,5-Triaza-2A4-and l,3,5-Triaza-225-phosphinane-4,6-diones The reactions o f 1,3,5-trimethylbiuret with dicyclohexylam inodichlorophosphine and with pyrrolidinodichlorophosphine furnished the triazaphosphinane-diones 1 and 2. Oxidation 
  Reference    Z. Naturforsch. 49b, 145—164 (1994); eingegangen am 29. Juli 1993 
  Published    1994 
  Keywords    1, 3, 5-Triorgano-Substituted l, 3, 5-Triaza-2-phosphinan-4, 6-diones, Oxidation Reactions, N M R Spectra, M ass Spectra, X -R ay 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0145.pdf 
 Identifier    ZNB-1994-49b-0145 
 Volume    49