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Solvias Josiphos Ligands: From Discovery to Technical Applications

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Abstract

The various stages from the invention of a ligand class to its technical application are described and illustrated by the case history of the Solvias Josiphos ligands. First, the prerequisites for a so-called “privileged ligand” are discussed, followed by a description of the Josiphos ligand family and their technical synthesis. Then, the catalytic performance of various Josiphos metal complexes in model reactions and in “real world” synthetic applications are summarized in the next two chapters. In the last part, three technical processes using Josiphos ligands are described: (i) The Ir-PPF-P(Xyl)2-catalyzed hydrogenation of MEA imine for the large scale production of the herbicide (S)-metolachlor; (ii) the application of a Rh-PPF-P(tBu)2 complex for the hydrogenation of a biotin intermediate; (iii) the Ru-PPF-P(Cy)2-catalyzed hydrogenation of a tetrasubstituted C=C bond for the production of cis-methyl dihydrojasmonate.

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Authors and Affiliations

  1. Solvias AG, PO Box, CH-4002, Basel, Switzerland

    Hans-Ulrich Blaser

  2. Lonzagroup, CH-3930, Visp, Switzerland

    Walter Brieden

  3. Solvias AG, PO Box, CH-4002, Basel, Switzerland

    Benoit Pugin, Felix Spindler & Martin Studer

  4. Laboratory of Inorganic Chemistry, ETH, CH-8093, Zürich, Switzerland

    Antonio Togni

Authors
  1. Hans-Ulrich Blaser
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  2. Walter Brieden
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  3. Benoit Pugin
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  4. Felix Spindler
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  5. Martin Studer
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  6. Antonio Togni
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Blaser, HU., Brieden, W., Pugin, B. et al. Solvias Josiphos Ligands: From Discovery to Technical Applications. Topics in Catalysis 19, 3–16 (2002). https://doi.org/10.1023/A:1013832630565

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