Search Results - "Thönnessen, Holger"
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Cyclization of C-phosphorylated (PIII) arylformamidines to 3H-1,3-benzazaphospholes
Published in Tetrahedron (07-10-2011)“…A synthesis of 3H-1,3-benzazaphospholes starting from C-phosphorylated P(III) arylformamidines has been developed. Electron-donating substituents were found to…”
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Cyclization of C-phosphorylated (P III) arylformamidines to 3 H-1,3-benzazaphospholes
Published in Tetrahedron (2011)“…A synthesis of 3 H-1,3-benzazaphospholes starting from C-phosphorylated P(III) arylformamidines has been developed. Electron-donating substituents were found…”
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Preparation and structures of 1-dimethylamino-2-bis(dimethylamino)- and 1-chloro-2-bis(diethylamino)-1-phospha-2-phosphonium acenaphthene: the first examples of the 1,2-dihydro-1,2-diphospha-acenaphthene ring system
Published in Journal of organometallic chemistry (01-02-2002)“…This paper describes the preparation of 1,8-bis[bis(dimethylamino)phosphino]naphthalene ( 2a) and the attempted preparation of its isopropyl analogue 2c, which…”
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Reaktionen eines hexachlorsubstituierten Diazadiphosphetidins mit Diethylaminotrimethylsilan
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-07-2003)“…Die Umsetzung des 2, 2, 2, 4, 4, 4‐hexachlorsubstituierten Diazadiphosphetidins 1 mit unterschiedlichen Mengen Diethylaminotrimethylsilan führte zum…”
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Calix[4]arene Ligands with Phosphorus-Containing Groups Tethered at the Upper Rim
Published in Inorganic chemistry (05-04-1999)“…The preparation and coordinative properties of two upper-rim functionalized calixarenes,…”
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The host-guest complex between cone-25,26:27,28-bis(methylenedioxy)calix[4]arene and dichloromethane
Published in Acta crystallographica. Section C, Crystal structure communications (01-05-2003)“…The title compound, 25,26:27,28‐bis(methylenedioxy)pentacyclo[19.3.1.13,7.19,13.115,19]octacosa‐1(25)3,5,7(28),9,11,13(27),15,17,19(26),21,23‐dodecaene…”
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Stereoselective Synthesis and Structure of New Types of Calix[4]resorcinarenes. Complexation of Tetrakis(O,O-Phosphorus)Bridged-Calix[4]resorcinarenes with Heavy Metal Atoms
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-05-2000)“…The acid‐catalyzed (with HCl) condensation reactions of resorcinol (1) with 1‐naphthaldehyde (2) and isobutyraldehyde (3) furnished the tetrameric macrocyclic…”
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Phosphonium Salts of 1,8-Bis(diphenylphosphino)naphthalene: Molecular Structures and NMR-spectroscopic Studies
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-12-2001)“…A representative series of diphosphine monophosphonium salts [1‐Ph2P(C10H6)‐8‐PRPh2]+X– (2 b: R = H, X = CF3SO3; 4: R = Me, X = CF3SO3; 5: R = C6H5CH2 = Bn, X…”
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Monoxidised Sulfur and Selenium Derivatives of 1,8-Bis(diphenylphosphino)naphthalene: Synthesis and Coordination Chemistry
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-11-2000)“…Treatment of 1,8‐bis(diphenylphosphino)naphthalene (dppn, 1) with stoichiometric amounts of sulfur or selenium in toluene at 80 °C selectively afforded the…”
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Reaktionen eines hexachlorsubstituierten Diazadiphosphetidins mit Diethylaminotrimethylsilan
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-07-2003)Get full text
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Röntgenstrukturanalytische Untersuchungen von Diazadiphosphetidinen
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-04-2001)“…Verschiedene Diazadiphosphetidine werden aus PCl5 und primären Aminen, entsprechend einer modifizierten Kirsanov‐Reaktion, hergestellt und einer…”
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The host-guest complex between cone-25,26 :27,28-bis(methylene-dioxy)calix[4]arene and dichloromethane
Published in Acta crystallographica. Section C, Crystal structure communications (01-05-2003)“…The title compound, 25,26:27,28-bis(methylenedioxy)pentacyclo[19.3.1.1(3,7).1(9,13).1(15,19)]octacosa-1(25)3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene…”
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Synthesis of Symmetrical Bis-(2-chloro-1,3,2-benzodiazaphosphorinones) Hydrolysis and Fluorination of Selected Compounds
Published in Zeitschrift für anorganische und allgemeine Chemie (1950) (01-10-1999)“…The series of symmetrical bis‐amides 3 was formed by the reaction of N‐methylisatoic anhydride (1), with the diamines 2. Reaction of 3 with phosphorus…”
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N-( N′, N′, N″, N″-tetramethyl) guanidine-substituted phosphines as monodentate, bidentate or tridentate ligands in transition metal chemistry
Published in Journal of organometallic chemistry (15-02-1997)“…The diorganophosphinous- N-( N′, N′, N″, N″-tetramethyl) guanidinides 1a and 1b and the organophosphonous-bis- N-( N′, N′, N″, N″-tetramethyl)guanidinides 2…”
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Reactions of [Ru3(CO)10(μ-Ph2PCH2PPh2)] with secondary phosphines R2Ph involving bulky substituents (R tBu, 1-Ad, Cy); X-ray crystal structures of [Ru3(CO)6(μ-H)2(μ-PCy2)2(μ-Ph2PCH2PPh2)] and the electron-deficient carbonyl cluster [Ru3(μ-CO)(CO)4(μ3-H)(μ-H)(μ-PtBu2)2(μ-Ph2PCH2PPh2)]
Published in Journal of organometallic chemistry (01-08-1996)Get full text
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Chemistry of bis (pentafluorobenzyl) phosphines and phosphine oxides. Single-crystal X-ray diffraction study of η6-mesitylene-dichloro[bis (pentafluorobenzyl) phosphinous acid]-ruthenium (II) and of 1,2-bis(pentafluorophenyl) ethane
Published in Journal of fluorine chemistry (01-07-1997)Get full text
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Synthesis of Stable N′,N′,N′′,N′′-Tetramethylguanidine-Substituted σ4(P)- and σ3(P)-Organophosphorus Compounds with N-Protonated P-N Bonds - The First σ3-Phosphorus-Substituted Ammonium Salts
Published in European journal of inorganic chemistry (01-06-1998)“…The dependence of the protolytic decomposition rate of phosphorus amides on the substituents at phosphorus is decribed. On treatment with HCl, the…”
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Reactions of [Ru 3(CO) 10(μ-Ph 2PCH 2PPh 2)] with secondary phosphines R 2Ph involving bulky substituents (R tBu, 1-Ad, Cy); X-ray crystal structures of [Ru 3(CO) 6(μ-H) 2(μ-PCy 2) 2(μ-Ph 2PCH 2PPh 2)] and the electron-deficient carbonyl cluster [Ru 3(μ-CO)(CO) 4(μ 3-H)(μ-H)(μ-P tBu 2) 2(μ-Ph 2PCH 2PPh 2)]
Published in Journal of organometallic chemistry (1996)“…The reaction of [Ru 3(CO) 10(μ-dppm)] ( 1) with secondary phosphines R 2PH (R tBu, 1-Ad) in heptane under reflux leads to th electron-deficient metal cluster…”
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Chemistry of bis (pentafluorobenzyl) phosphines and phosphine oxides. Single-crystal X-ray diffraction study of η 6-mesitylene-dichloro[bis (pentafluorobenzyl) phosphinous acid]-ruthenium (II) and of 1,2-bis(pentafluorophenyl) ethane
Published in Journal of fluorine chemistry (1997)“…The reaction of pentafluorobenzyl magnesium bromide with phosphorus trichloride in a 2:1 molar ratio led to the disubstituted product, bis(pentafluorobenzyl)…”
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