Wolfgang Hell
Grünenthal GmbH
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Publication
Featured researches published by Wolfgang Hell.
Chemistry-an Asian Journal | 2008
Angelika Preetz; Wolfgang Baumann; Hans-Joachim Drexler; Christian Fischer; Jiangtao Sun; Anke Spannenberg; Oswald Zimmer; Wolfgang Hell; Detlef Heller
Various trinuclear rhodium complexes of the type [Rh(3)(PP)(3)(mu(3)-OH)(x)(mu(3)-OMe)(2-x)]BF(4) (where PP = Me-DuPhos, dipamp, dppp, dppe; different ligands and mu-bridging anions) are presented, which are formed upon addition of bases such as NEt(3) to solvate complexes [Rh(PP)(solvent)(2)]BF(4). They were extensively characterized by X-ray diffraction and NMR spectroscopy ((103)Rh, (31)P, (13)C, (1)H). Their in situ formation resulting from basic additives (NEt(3)) or basic prochiral olefins (without addition of another base) can cause deactivation of the asymmetric hydrogenation. This effect can be reversed by means of acidic additives.
Archive | 2007
Wolfgang Hell; Oswald Zimmer; Helmut Buschmann; Jörg Holenz; Stefan Gladow
Archive | 2004
Wolfgang Hell; Markus Kegel; Bernhard Akteries; Helmut Buschmann; Jörg Holenz; Hartmut Löbermann; Detlef Heller; Hans-Joachim Drexler; Stefan Gladow
Archive | 2005
Wolfgang Hell; Markus Kegel; Bernhard Akteries; Helmut Buschmann; Joerg Holenz; Hartmut Loebermann; Detlef Heller; Hans-Joachim Drexler; Stefan Gladow
Archive | 2005
Wolfgang Hell; Markus Kegel; Berhard Akteries; Helmut Buschmann; Joerg Holenz; Harmut Loebermann; Detlef Heller; Hans-Joachim Drexler; Stefan Gladow
Archive | 2006
Helmut Heinrich Buschmann; Wolfgang Hell
Archive | 2008
Wolfgang Hell; Markus Kegel; Helmut Buschmann; Felix Spindler; Detlef Heller; Hans-Joachin Drexler
Archive | 2006
Wolfgang Hell; Markus Kegel; Helmut Buschmann; Felix Spindler; Detlef Heller; Hans-Joachim Drexler
Archive | 2006
Michael Gruss; Helmut Buschmann; Andreas Fischer; Wolfgang Hell; Dagmar Lischke
Archive | 2006
Helmut Heinrich Buschmann; Wolfgang Hell
