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1Author    Gabriele Knörzer, Herm Ann Seyffer, W. Alter, SiebertRequires cookie*
 Title    Synthese von Diboraheterocyclen mit einer BC3B-Gruppierung Synthesis of Diboraheterocycles with a BC3B Unit  
  Reference    Z. Naturforsch. 45b, 1136—1138 (1990); eingegangen am 31. Januar 1990 
  Published    1990 
  Keywords    1, 3-Diborylpropanes, 1, 2-Diborolane, 1, 2, 6-Thiadiborinane, 1, 2, 6-Azadiborinane 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1136.pdf 
 Identifier    ZNB-1990-45b-1136 
 Volume    45 
2Author    Peter Kölle, Heinrich Nöth, RobertT. Paine, Wilfried RattayRequires cookie*
 Title    Beiträge zur Chemie des Bors, 195 [1] Synthese, Struktur und Reaktionen eines l,3,2,4-Aza-A 3 -phosphadiboretidin-Derivats Contributions to the Chemistry of Boron, 195 [1] Synthesis, Structure and Reaction of a l,3,2,4-Aza-A 3 -phosphadiboretidine Derivative  
  Reference    Z. Naturforsch. 43b, 1439—1446 (1988); eingegangen am 27. Juni 1988 
  Published    1988 
  Keywords    1, 3, 2, 4-Azaphosphadiboretidine, 1, 3, 2, 4-Azaphosphoniadiboretidinium-iodid, 1, 3, 2, 4-Selenaazadiboretidine 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1439.pdf 
 Identifier    ZNB-1988-43b-1439 
 Volume    43 
3Author    Volker Bätzel, Roland BoeseRequires cookie*
 Title    Synthesis and Structure of 1,2,3-Thiadiazol-and 1,2,3-Selenadiazol-Pentacarbonyl-Complexes of the Elements Chromium and Tungsten  
 Abstract    From the reactions of (THF)M(CO)5 (M = Cr, W) with 4-phenyl-l,2,3-thiadiazol, 4-methyl-5-carboxylic acid-l,2,3-thiadiazol, 4-methyl-5-carboxylic acid ethyl ester-1,2,3-thiadiazol and 4-methyl-l,2,3-selenadiazol, pentacarbonyl-complexes are obtained as air stable compounds. IR spectra of products of similar reactions with M = Mo provide some evidence of the formation of analogous complexes. The thiadiazol complexes are also accessible directly, by photochemical displacement of carbonmonoxid in THF from the parent carbonyl. The X-ray structures of pentacarbonyl-(4-phenyl-l,2,3-thiadiazol)-tungsten and pentacarbonyl-(4-methyl-l,2,3-selenadiazol)-chromium show the coordina-tion of the ligand to the pentacarbonyl-metal-fragment via the nitrogen in position 2. 
  Reference    Z. Naturforsch. 36b, 172—179 (1981); eingegangen am 15. Oktober/21. November 1980 
  Published    1981 
  Keywords    1, 2, 3-Thiadiazoles, 1, 2, 3-Selenadiazoles, Pentacarbonyl Complexes 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0172.pdf 
 Identifier    ZNB-1981-36b-0172 
 Volume    36 
4Author    Mathias Noltemeyer, GeorgeM. Sheldrick, Carl Habben, Anton MeilerRequires cookie*
 Title    Reaktionen von Mehrfachbindungssystemen mit dem 1.2.4-Trithia-3.5-diborolan-Ring -Eine strukturelle Richtigstellung Reactions of Multiple-Bond-Systems with the l,2,4-Trithia-3,5-diborolane Ring - A Structural Correction-Dithia-3-bora-4-azacyclopentanones-(5) and -thiones-(5), Crystal Structure  
  Reference    Z. Naturforsch. 38b, 1182—1191 (1983); eingegangen am 6. Juli 1983 
  Published    1983 
  Keywords    1, 2, 3-Dithiaboroles, 1, 3, 2-Dithiaboroles, l, 2 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1182.pdf 
 Identifier    ZNB-1983-38b-1182 
 Volume    38 
5Author    Rolf Minkwitz, Detlef KonikowskiRequires cookie*
 Title    Über verbesserte Darstellungs­ methoden für CF3OCH3 Improved Methods to Prepare CF3 O C H 3  
 Abstract    The reaction of CH 3I with CF3OCl at 203 K yields CF3O C H 3. The preparation of the ether by methylation of CsOCF3 with (CH3)2S 0 4 is also described. 
  Reference    Z. Naturforsch. 51b, 147—148 (1996); eingegangen am 21. Juni 1995 
  Published    1996 
  Keywords    1, 1, 1-Trifluoromethyl-methyl-ether, Preparation, N M R Spectra 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0147_n.pdf 
 Identifier    ZNB-1996-51b-0147_n 
 Volume    51 
6Author    Jochen Eilermann, HelmutA. LindnerRequires cookie*
 Title    Komplexchemie polyfunktioneller Liganden, 52 [1] Hydrido-und Deuterido-mangan(I)-carbonyl  
 Abstract    Komplexe des 1.1.1-Tris (diphenylphosphinomeihy 1) e thans Complex Chemistry of Polyfiinctional Ligands, 52 [1] Hydrido-and Deuterido-manganese(I)-carbonyl Complexes of 1,1,1 -Tris(diphenylphosphinomethyl)ethane 
  Reference    Z. Naturforsch. 34b, 799—804 (1979); eingegangen am 26. März 1979 
  Published    1979 
  Keywords    Deuterido-manganese(I)-carbonyl Complexes, 1, 1, 1 -Tris(diphenylphosphinomethyl)ethane, Vibrational Spectra, 31 P NMR, NMR 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0799.pdf 
 Identifier    ZNB-1979-34b-0799 
 Volume    34 
7Author    Claudia Bäk, Klaus PraefckeRequires cookie*
 Title    und dessen Cycloreversion Organic Sulfur Compounds, XLVII [1] Dimerization of Monothiobenzil to a 1,3-Dithietane and its Cycloreversion  
 Abstract    The thermal dimerization of monothiobenzil (lc) to a 1,3-dithietane (2c) and the photochemical cycloreversion of this heterocycle to 1 c is described. 
  Reference    Z. Naturforsch. 35b, 372—375 (1980); eingegangen am 26. November 1979 
  Published    1980 
  Keywords    Heterocycles, Organic Sulfur Compounds, a-Oxothiones, 1, 3-Dithietans, 1, 3-Oxathiols, Photoreactions 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0372.pdf 
 Identifier    ZNB-1980-35b-0372 
 Volume    35 
8Author    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 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0896.pdf 
 Identifier    ZNB-1982-37b-0896 
 Volume    37 
9Author    Xian-Ming Pan, Eugenie Bastian, Clemens Von SonntagRequires cookie*
 Title    The Reactions of Hydroxyl Radicals with 1,4-and 1,3-Cyclohexadiene in Aqueous Solution A Pulse Radiolysis and Product Study  
 Abstract    The reactions of radiolytically generated hydroxyl radicals and H atoms with 1,4-and 1,3-cyclohexadiene were studied by pulse radiolysis and product analysis. Hydrogen abstraction from these substrates by the OH radical yields the cyclohexadienyl radical (f (310 nm) = 4400 dm 1 mol" 1 cm"' from the reaction of the H atom with benzene) with an efficiency of 50% (0.29 ,«moI /"') in the case of 1,4-cyclohexadiene and 25% (0.15,«mol /"') in the case of 1,3-cyclohexadiene as determined by pulse radiolysis. The remaining OH radicals add to the olefin. In 1,4-cyclohexa-diene the yield of the resulting adduct radicals has been determined in a steady-state "'Co-y-irradiation experiment by reducing it with added 1,4-dithiothreitol (DTT) to 4-hydroxycyc-lohexene. There are two sites of OH radical attack in the case of 1,3-cyclohexadiene, and only the alkyl radical is reduced quantitatively by DTT (G(3-hydroxycyclohexene) = 0.15 ,«mol J '). From material balance considerations it is concluded that the allylic radical must be formed with a G value of 0.28 «mol J~ x but largely escapes reduction by DTT (G(4-hydroxycyclohexene) = 0.03 ,«mol y 1). H atoms add preferentially to the double bonds of 1,4-and 1,3-cyclohexadiene (78% and 93%, respectively), while the O t radical (the basic form of the OH radical) undergoes mainly H-abstraction (92% and 83%. respectively). The radicals formed in these systems decay bimolecularly (2k = 2.8xl0 4 dm' mop 1 s~'). In their combination reactions the cyclohexadienyl radicals form the four possible dimers in propor-tions such that the dienyl radical moiety shows a 2:1 preference to react from its central (la) rather than from a terminal carbon atom (lb). Cyclohexadienyl radicals and the OH-and H-adduct radicals also cross-terminate by disproportionation and dimerization. Material balance has been obtained for the 1,4-cyclohexadiene system in N : 0-saturated solution (10 : mol dm 3) at a dose rate of 0.14 Gy s" 1 , the products (G values in «mol J ') being: benzene (0.085), 4-hydroxycyclohexene (0.25), cyclohexadienyl-dimers (0.144), cyclohexadienyl-OH-adduct-dimers (0.02), OH-adduct-dimers (0.02). Some of the 4-hydroxycyclohexene is formed in an H-abstraction reaction by the OH-adduct radical from 1,4-cyclohexadiene. 
  Reference    Z. Naturforsch. 43b, 1201—1205 (1988); received April 13 1988 
  Published    1988 
  Keywords    1, 4-Cyclohexadiene, 1, 3-Cyclohexadiene Hydroxyl Radical, Cyclohexadienyl Radical, Pulse Radiolysis 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1201.pdf 
 Identifier    ZNB-1988-43b-1201 
 Volume    43 
10Author    MichaelW Z Enke+, Karl HensenRequires cookie*
 Title    Thermodynamische Untersuchungen der Systeme Pyridin/CH3SiCl3 und Pyridin/Cl3C CH3 Thermodynamic Examinations of the Systems Pyridine/CH3SiCl3 and Pyridine/C13CCH3  
 Abstract    The isobaric m elting and boiling diagrams for the systems: pyridine/m ethyltrichlorosilane and pyridine/1,1,1-trichloroethane are reproduced. The existence of the congruently melting addition com pound C H 3SiCl3-(P yridin)2 could be confirm ed. S om e m easu rem en ts o f the m olar volu m e o f m ixtures b etw een pyridine and m ethyltrichlorosilane and pyridine and 1,1,1-trichloroethane, respectively, are reported. For both system s the m olar excess v o l­ um e and for the system pyridine/m ethyltrichlorosilane the m olar excess en th alp ie have b een calculated as a function o f the m ole fractions. 
  Reference    Z. Naturforsch. 48b, 1127 (1993); eingegangen am 19. März 1993 
  Published    1993 
  Keywords    Phase Diagram s, Pyridine, M ethyltrichlorosilane, 1, 1, 1-Trichloroethane, E xcess V alues 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1127.pdf 
 Identifier    ZNB-1993-48b-1127 
 Volume    48 
11Author    M. Anfred Fild, PeterG. Jones, Karsten Ruhnau, Carsten ThöneRequires cookie*
 Title    Darstellung und Strukturen von 2,2,4,4-Tctrafluor-l,3-diphosphctancn und -1,3-diphosphetan-disulfiden Synthesis and Structures of 2,2,4,4-Tetrafluoro-l,3-diphosphetanes and of -1,3-diphosphetane Disulfides  
 Abstract    A simple route to 1,3-diphosphetanes [RPCF2]2 [R = Ph, Me, Bu'] is described. The phos-phaalkene intermediates RP=CF2, as well as the corresponding disulfides [R (S)PC F2]2 have been characterized. The crystal structures of [PhPCF2]2, and of the sulfides [Ph(S)PCF2]2 and [Bu'(S)PCF2]2 are reported. 
  Reference    Z. Naturforsch. 49b, 1361—1367 (1994); eingegangen am 6. Juni 1994 
  Published    1994 
  Keywords    Phosphaalkenes, 1, 3-Diphosphetanes, 1, 3-Diphosphetane Disulfides, NM R Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1361.pdf 
 Identifier    ZNB-1994-49b-1361 
 Volume    49 
12Author    Phosphonio-Substituted Tetrahydro-, -Diphosphinines, -Azaphosphinines, Georg Jochem, Martin Schm, HeinrichN. Öth ', Alfred SchmidpeterRequires cookie*
 Title    Phosphonio-substituierte Tetrahydro-l,3-diphosphinine un(j Tetrahy dro-1,2,6-azad i phospli in i ne  
 Abstract    The bis(triphenylphosphonio)propenide cation 1 provides two reactive CH sites in 1,3-position and can be condensed with the bis(dichlorophosphanyl)methylene triphenylphos-phorane 2 or the bis(dichlorophosphanyl)aniline 3 to form cationic six-membered rings: A tetrahydro-1,3-diphosphinine (4) with three phosphonio or phosphoranediyl substituents in 2,4,6-position and a tetrahydro-1,2,6-azadiphosphinine (5) carrying two such substituents in 3,5-position. The bromide of the latter was used for an X-ray structure analysis. The P111 ring members of the cations 4 and 5 can be oxidized in two steps by elemental sulfur to give the monothioxo and dithioxo derivatives 6. 7 and 8, 9. respectively. A crystal of the mixed chloride/bromide of 8 was used for another X-ray structure analysis. 
  Reference    Z. Naturforsch. 51b, 1761—1767 (1996); eingegangen am 16. August 1996 
  Published    1996 
  Keywords    Dichlorophosphanyl Ylides and Amines, Cyclocondensation, Phosphorus Heterocycles, 1, 3-Diphosphinines, 1, 2, 6-Azadiphosphinines 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1761.pdf 
 Identifier    ZNB-1996-51b-1761 
 Volume    51 
13Author    T. Deforth, M. Kaschke, H. Stock, H. Pritzkow, W. SiebertRequires cookie*
 Title    Synthesis of C2B3 X-Heterocycles (X = C, N, P, O, S) from l,3?5-Triborapentanes  
 Abstract    The hydroboration of acetylene with HBCb yields the products (CbB^CHM e (la), (Cl2BCHMe)2BCl (2a), (Cl2BCHMeBCl)2CHMe (3a), and (ClBCHMe)3 (4a). The crystal structure of 4a as well as of the pentaiodo derivative 2b were determined. A mechanism for the formation of the different hydroboration products is proposed. The 1,3,5-triborapentane 2a serves as precursor for the synthesis of derivatives of 1,3,5-triboracyclohexanes, 1,3,5-tribora-2-aza-cyclohexanes, l,3,5-tribora-2-phospha-cyclo-hexanes, and 1,3,5-tribora-2-thia-cyclohexanes. Their constitutions have been derived from spectroscopic studies. The crystal structure of the 1,3,5-tribora-2-oxa-cyclohexane derivative was also determined. 
  Reference    Z. Naturforsch. 52b, 823—830 (1997); received March 4 1997 
  Published    1997 
  Keywords    Hydroboration, 1, 3, 5-Triborapentanes, 1, 3, 5-Triboracyclohexanes, l, 3, 5-Tribora-2-oxa-cyclo-hexanes, 1, 3, 5-Tribora-2-aza-cyclohexanes 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0823.pdf 
 Identifier    ZNB-1997-52b-0823 
 Volume    52 
14Author    Thomas Dezember, Helmut SitzmannRequires cookie*
 Title    Die Fulven-Route zum Pentaisopropylcyclopentadienid The Fulvene Route to Pentaisopropylcyclopentadienide  
  Reference    Z. Naturforsch. 52b, 911—918 (1997); eingegangen am 21. April 1997 
  Published    1997 
  Keywords    1, 2, 3, 4-Tetraisopropyl-6-dimethylamino-pentafulvene, 1, 2, 3, 4-Tetraisopropyl-6-methyl-pen-tafulvene, 1, 2, 3, 4-Tetraisopropylpentafulvene, Lithium Pentaisopropylcyclopentadienide, Ful­ vene Complexes 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0911.pdf 
 Identifier    ZNB-1997-52b-0911 
 Volume    52 
15Author    SanaaM. EldinRequires cookie*
 Title    Reactions of Cyanothioacetamide Derivatives with 2-Hydrazinothiazol-4(5//)-one: Synthesis, Cyclization and Biological Evaluation of Several New Annelated Pyran, Thiazole, 1,2,4-Triazole and 1,2,4-Triazine Derivatives  
 Abstract    The thiocarboxamidocinnamonitriles (2) reacted with 2-hydrazinothiazol-4(5//)-one (3) to afford the corresponding pyrano[2,3-d]thiazoles (6). Compounds 6 were used for the synthe­ sis of several new annelated pyran, thiazole, 1,2,4-triazole and 1,2,4-triazine derivatives via their reactions with chloroacetic acid, ethyl chloroformate, diethyl oxalate and acetylacetone. Structures were established based on elemental and spectral data studies. Some of the newly synthesized heterocyclic derivatives were tested for their antimicrobial activity. 
  Reference    Z. Naturforsch. 54b, 1589—1597 (1999); received July 2 1999 
  Published    1999 
  Keywords    Thiocaboxamidocinnamonitriles, Pyrans, Thiazoles, 1, 2, 4-Triazoles, 1, 2, 4-Triazines 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1589.pdf 
 Identifier    ZNB-1999-54b-1589 
 Volume    54 
16Author    Franz Dallacker, Thomas Böhmel, W. Ilhelm Müllners, HeinrichM. ÜckterRequires cookie*
 Title    Amin-carbamoyl-10B-boran, Darstellung und biologische Eigenschaften Amine-carbamoyl-dihydro-10B-borane, Preparation, and Biological Properties  
 Abstract    The chemical section deals with the synthesis of sodiumcyano-"'B-borhydride (3) from l0B-boric acid trimethyl ester (1) via sodium-inB-borhydride (2). By converting 3 with trimethylammonium chloride, trimethylamine-cyano-10B-borane (4) is formed which, via nitrilium tetrafluoroborate 5, is transformed by water to Trimethylamine-carboxy-dihydro-luB-borane (6). Trimethylamine-ethoxycarbonyl-dihydro-l()B-borane (8b) and amine-carbamoyl-dihydro-"'B-borane (8c) can be synthesized from the imidazolid 8a. In the biological section an orientation to the toxicity and the tumor affinity of the compounds 6, 7. and 8c are described. Further the possibility is shown by achieving a maximal concentration of 10B-boron in the tumor whilst at the same time retaining as low a concentration of 1()B-Boron as possible in the surrounding tissue. 
  Reference    Z. Naturforsch. 40c, 344 (1985); received March 4/April 12 1985 
  Published    1985 
  Keywords    1(, B-Boron, Neutron Capture Therapy, Amine-carboxy-dihydro-'°B-borane 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0344.pdf 
 Identifier    ZNC-1985-40c-0344 
 Volume    40 
17Author    Klaus Burger, Herbert Goth, Eduard BurgisRequires cookie*
 Title    Zum Thermolyseverhalten von 2.2-Dihydro-1.4.2-oxazaphosphol-4-enen, II [1] Eine einfache Synthese für fluorsubstituierte N-Vinylimidoylchloride Thermolysis of 2,2-Dihydro-l,4,2-oxazaphosphol-4-enes, II [1] A Simple Synthesis for Fluorine Substituted N-Vinylimidoyl Chlorides  
 Abstract    3,3-Bis(chlorodifluoromethyl)-2,2,2-trimethoxy-2,2-dihydro-l,4,2-oxazaphosphol-4-enes (2) at room temperature, 3,3-bis(chlorodifluoromethyl)-2,2,2-triphenoxy-2,2-dihydro-l,4,2-oxazaphosphol-4-enes (3) at 140-145 °C undergo cycloelimination of trimethyl, and triphenyl phosphate, respectively, with formation of N-[l-chlorodifluoromethyl-2,2-di-fluoro(vinyl)]-imidoyl chlorides (4) in high yields. 
  Reference    Z. Naturforsch. 36b, 353—358 (1981); eingegangen am 18. November 1980 
  Published    1981 
  Keywords    Phosphorus Compounds, [3 + 2] Cycloreversion Reactions, [1, 4] Chlorine Shift, 2 -Azabuta-1, 3 -dienes 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0353.pdf 
 Identifier    ZNB-1981-36b-0353 
 Volume    36 
18Author    Friedrich Boberg, Rainer VossRequires cookie*
 Title    Markierte Verbindungen, XXV 1 Chloraustausch zwischen und Antimon(III)-chlorid -das 1.2.3-Trichlorpropenylium-Ion On Labelled Compounds, XXV 1 Chlorine Exchange between 1,2,3,3-Tetrachloro-l-propene and Antimony(Ill)-chloride — the 1,2,3-Trichloropropenylium Ion  
  Reference    (Z. Naturforsch. 31b, 480—486 [1976]; eingegangen am 13. November 1975) 
  Published    1976 
  Keywords    Chlorine Exchange, 1, 2, 3, 3-Tetrachloro-l-propene, 1, 2, 3-Trichloropropenylium Ion, Ally lie Rearrangement, eis j trans-Isomerization 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0480.pdf 
 Identifier    ZNB-1976-31b-0480 
 Volume    31 
19Author    Gerd-Volker RöschenthalerRequires cookie*
 Title    The Insertion of Hexafluoroacetone into P-H Bonds of Phosphanes MenPH3_n  
  Reference    Z. Naturforsch. 33b, 311—315 (1978); eingegangen am 12. Dezember 1977/19. Januar 1978 
  Published    1978 
  Keywords    2-Hydroxy-l, l, l, 3, 3, 3-hexafluoroisopropyl-phosphanes, Hexafluoroacetone, Bis( 1, 1, 1, 3, 3, 3-hexafluoroisopropoxy )dimethylfluorophosphorane 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0311.pdf 
 Identifier    ZNB-1978-33b-0311 
 Volume    33 
20Author    Hubert Schmidbaur, Peter HollRequires cookie*
 Title    Die Reaktion eines gemischten Doppelylids mit Ethylenoxid Reaction of a Mixed Double Ylide with Ethylene Oxide  
 Abstract    Dimethyl-trimethylphosphinimino-methylene-phosphorane, (CH3)3P=N-P(CH3)2 = CH2 was found to react with ethylene oxide to form a 1:1 adduct, that was identified as 2,2-dimethyl-2-trimethylphosphinimino -1,2 A 5 -oxaphospholane. According to its 1 H, 13 C, 31 P NMR spectra it is assigned a rigid trigonal bipyramidal structure with nitrogen and oxygen atoms in axial positions. 
  Reference    Z. Naturforsch. 33b, 572—573 (1978); eingegangen am 28. Februar 1978 
  Published    1978 
  Keywords    Ylides, Ethylenoxide, 1, 2-Oxaphospholane 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0572_n.pdf 
 Identifier    ZNB-1978-33b-0572_n 
 Volume    33