Search Results - "Hoffmann, Stephan D."

Chiral N-Heterocyclic Carbene Ligands Derived from 2,2‘-Bipiperidine and Partially Reduced Biisoquinoline:  Rhodium and Iridium Complexes in Asymmetric Catalysis by Herrmann, Wolfgang A, Baskakov, Denys, Herdtweck, Eberhardt, Hoffmann, Stephan D, Bunlaksananusorn, Tanasri, Rampf, Florian, Rodefeld, Lars

“…New and reliable procedures for the preparation of both enantiomers of 2,2‘-bipiperidine have been developed. Chiral imidazolinium salts derived from…”
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A Carbocyclic Carbene as an Efficient Catalyst Ligand for CC Coupling Reactions by Herrmann, Wolfgang A., Öfele, Karl, Schneider, Sabine K., Herdtweck, Eberhardt, Hoffmann, Stephan D.

“…A new player on the field: Carbocyclic carbenes are potentially better control ligands than N‐heterocyclic carbenes (NHCs) in catalyzed CC coupling reactions…”
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Synthesis and Properties of (Triptycenedicarboxylatio)zinc Coordination Networks by Vagin, Sergei I., Ott, Anna K., Hoffmann, Stephan D., Lanzinger, Dominic, Rieger, Bernhard

“…Paddle wheels and pillars: Layered 3D metal–organic frameworks comprised of paddle‐wheel coordination units are constructed under a variety of conditions to…”
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Chiral N-Heterocyclic Carbenes with Restricted Flexibility in Asymmetric Catalysis by Baskakov, Denys, Herrmann, Wolfgang A, Herdtweck, Eberhardt, Hoffmann, Stephan D

“…A chiral C 2-symmetric diamine was prepared from (S)-3-phenyl-3,4-dihydroisoquinoline by the virtue of asymmetric transformation. Rhodium and iridium complexes…”
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[Cu@Sn(9)](3-) and [Cu@Pb(9)](3-): intermetalloid clusters with endohedral Cu atoms in spherical environments by Scharfe, Sandra, Fässler, Thomas F, Stegmaier, Saskia, Hoffmann, Stephan D, Ruhland, Klaus

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Endohedral Zintl Ions: Intermetalloid Clusters by Fässler, Thomas F., Hoffmann, Stephan D.

“…Tetrels can be regarded as most promising candidates for the construction of larger clusters. Recent examples have shown that larger clusters are particularly…”
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[Au3Ge18](5-)--a gold-germanium cluster with remarkable Au-Au interactions by Spiekermann, Annette, Hoffmann, Stephan D, Kraus, Florian, Fässler, Thomas F

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Synthesis of ferrocenyl aryl ethers via Cu(I)/phosphine catalyst systems by Frey, Guido D., Hoffmann, Stephan D.

“…Ferrocenyl aryl ethers can be synthesized in good yields by Cu(I)/phosphine-catalyzed coupling reactions from iodoferrocene or 1,1′-dibromoferrocene and…”
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Cleavage of Unstrained C(sp2)C(sp2) Single Bonds with Ni0 Complexes Using Chelating Assistance by Ruhland, Klaus, Obenhuber, Andreas, Hoffmann, Stephan D

“…The reaction of Ni(COD)2 with a ligand containing a biphenyl subunit (P( i Pr)2-O-Ph-Ph-O-P( i Pr)2, L1) resulted in a mixture of compounds, the main product…”
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A novel one-pot synthesis of highly diverse indole scaffolds by the Ugi/Heck reaction by Kalinski, Cédric, Umkehrer, Michael, Schmidt, Jürgen, Ross, Günther, Kolb, Jürgen, Burdack, Christoph, Hiller, Wolfgang, Hoffmann, Stephan D.

“…A novel one-pot two-step multi component reaction of acrylic aldehydes, bromoanilines, acids and isocyanides yielding polysubstituted indoles is described. The…”
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[Au₃Ge₄₅]⁹⁻--A Binary Anion Containing a {Ge₄₅} Cluster by Spiekermann, Annette, Hoffmann, Stephan D, Fässler, Thomas F, Krossing, Ingo, Preiss, Ulrich

“…The golden era of germanium: The largest known germanium cluster [Au3Ge45]9− consists of 45 Ge atoms coordinated to three Au atoms and is obtained by the…”
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The Zintl Ion [Pb10]2−: A Rare Example of a Homoatomic closo Cluster by Spiekermann, Annette, Hoffmann, Stephan D., Fässler, Thomas F.

“…Closed encounters: A closed deltahedral homoatomic cluster, [Pb10]2−, is structurally characterized. When this “empty” cluster is considered together with the…”
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[Pb5{Mo(CO)3}2]4−: A Complex Containing a Planar Pb5 Unit by Yong, Li, Hoffmann, Stephan D., Fässler, Thomas F., Riedel, Sebastian, Kaupp, Martin

“…Lead around: The cyclic [Pb5]4− ion can be stabilized as an organometallic complex with the {Mo(CO)3} fragment. This complex is formed by the reaction of…”
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Synthesis and Crystal Structure Analysis of C60 Fulleride Dianions in Solvates of [A([2.2.2]crypt)]2[C60] (A = K, Rb, Cs) by Hoffmann, Stephan D., Fässler, Thomas F.

“…Reduction of C with the alkali metals A = K, Rb and Cs in tetrahydrofuran as a solvent and addition of [2.2.2]crypt [1], dimethylformamide and cyclohexane lead…”
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Cleavage of Unstrained C(sp 2 )—C(sp 2 ) Single Bonds with Ni 0 Complexes Using Chelating Assistance by Ruhland, Klaus, Obenhuber, Andreas, Hoffmann, Stephan D.

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Acceptor substituted N-heterocyclic carbenes and their Rh(I)complexes: Synthesis, structure and properties by Bittermann, Agnes, Härter, Peter, Herdtweck, Eberhardt, Hoffmann, Stephan D., Herrmann, Wolfgang A.

“…Rhodium(I) complexes of acceptor substituted N-heterocyclic carbenes were obtained either by transmetalation from the corresponding Ag(I) complexes or by…”
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A new palladium(II) complex of a functionalized N-heterocyclic carbene: Synthesis, characterization and application in Suzuki–Miyaura cross-coupling reactions by Linninger, Claudia S., Herdtweck, Eberhardt, Hoffmann, Stephan D., Herrmann, Wolfgang A., Kühn, Fritz E.

“…trans-[PdBr 2(NHC)Im] was prepared by reacting the corresponding imidazolium (Im) salt with palladium(II) acetate in dimethylsulfoxide in an in-situ reaction…”
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Synthesis and Crystal Structure of [K([2.2]crypt)]2[HgGe9](dmf) by Boeddinghaus, M. Bele, Hoffmann, Stephan D., Fässler, Thomas F.

“…The title compound [K([2.2]crypt)]2[HgGe9](dmf) (1) has been obtained by reaction of elemental mercury with the binary phase of the formal composition K4Ge9 in…”
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Catalysis of CC-coupling reactions by cyclopropenylidene palladium complexes by Herrmann, Wolfgang A., Öfele, Karl, Taubmann, Christian, Herdtweck, Eberhardt, Hoffmann, Stephan D.

“…A series of dinuclear chloro-bridged 2,3-diarylcyclopropenylidene palladium(II) complexes (aryl = phenyl, mesityl, naphthyl) were synthesized by oxidative…”
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Ein carbocyclisches Carben als effizienter Katalysatorligand für C‐C‐Kupplungen by Herrmann, Wolfgang A., Öfele, Karl, Schneider, Sabine K., Herdtweck, Eberhardt, Hoffmann, Stephan D.

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