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Updated: May 15, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Novel iPrRu-MACHO Salts: Synthesis and Catalytic Applications With Diverse H-Trans Ligands
Tu Anh Tran1, Valeria Nori1, Alexander T Nikol1
1Department of Chemistry, Technical University of Denmark, Lyngby, Denmark.
Abstract:
The Ru-MACHO complex acts as a precatalyst for a plethora of significant catalytic transformations. However, since its discovery approximately two decades ago, most enhancement attempts have been limited to varying the P-substituents for increasing catalyst performance or replacing Ru for greener alternatives. In this study we synthesize novel trans-L monohydrido iPrRu-MACHO complex derivatives that can act as precatalysts operating under mild conditions while maintaining high activity and selectivity in a variety of chemical transformations. Specifically, we deeply studied their potentially trans influence and investigated their catalytic efficiency for CO2 hydrogenation, formic acid dehydrogenation, and levulinic acid hydrogenation, and we compared their activity with their commercially available precursor (iPrRu-MACHO).
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