7 research outputs found
Recent advances in the controlled preparation of poly(α-hydroxy acids): Metal-free catalysts and new monomers
Get PDFRegioselective Synthesis of Indenylruthenium(II) Vinylalkylidene Complexes via Proton Additions to Vinylalkenyl Derivatives
No full textFormation and Selective Trapping of 2,5-Dihydropyridine and Its Isopropylidene Derivative by Tungsten(0) Alkylidene Complexes. X-ray Structure of the 5-Isopropylidene-2,5-dihydropyridine Adduct
No full textMetal-Ligand-Lewis Acid Multi-Cooperative Catalysis: A Step Forward in the Conia-Ene Reaction
No full textInternational audienceAn original multi-cooperative catalytic approach was developed by combining metal-ligand cooperation and Lewis acid activation. The [(SCS)Pd]2 complex featuring a non-innocent indenediide-based ligand was found to be a very efficient and versatile catalyst for the Conia-Ene reaction, when associated with Mg(OTf)2. The reaction operates at low catalytic loadings under mild conditions with HFIP as co-solvent. It works with a variety of substrates, including those bearing internal alkynes. It displays complete 5-exo vs 6-endo regio-selectivity. In addition, except for the highly congested t Bu-substituent, the reaction occurs with high Z vs E stereo-selectivity, making it synthetically useful and complementary to known catalysts.
Insertion Reactions of Alkynes into the RuâH Bond of Indenylruthenium(II) Hydride Complexes. Mechanism of the Reaction of Phenylacetylene with [RuH(η 5
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