Cover image for Vol. 9 Issue 19

Editor: Michael Rowan; Editorial Board Chairs: Uwe Bornscheuer, Hermenegildo García, A. Stephen K. Hashmi

Impact Factor: 4.724

ISI Journal Citation Reports © Ranking: 2015: 29/144 (Chemistry Physical)

Online ISSN: 1867-3899

Associated Title(s): Advanced Synthesis & Catalysis, Angewandte Chemie International Edition, Chemistry - A European Journal, ChemBioChem, ChemElectroChem, ChemPhotoChem, ChemPhysChem, ChemSusChem

4_12i/2012Inside Cover: Clean, Convenient, High-yield Access to Second-generation Ru Metathesis Catalysts from Commercially Available Precursors (ChemCatChem 12/2012)

Keeping Metathesis Simple The cover picture shows a clean, general, and highly efficient route to the three dominant ruthenium catalysts currently used for olefin metathesis. The Full Paper by D. E. Fogg et al. on p. 2020 ff., describes the synthesis of “second-generation” Ru metathesis catalysts in ≥95% isolated yield and excellent purity, by reacting the PCy3 parent complexes with isolated free H2IMes, and using an ion-exchange resin to sequester the liberated phosphine. Workup involves simply filtration and evaporation of the solvent. The speed, efficiency, generality and convenience of this methodology provides an attractive alternative to prior approaches based on in situ deprotonation or deprotection of imidazolinium derivatives.

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