Methods for preparing ruthenium carbene complexes and precursors thereto
AssigneeElevance Renewable Sciences, Inc.
InventorsLinda A. Kunz, Steven A. Cohen
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Abstract
Methods of preparing ruthenium carbene complex precursors are disclosed herein. In some embodiments, the methods include reacting a ruthenium refinery salt with an L-type ligand and a reducing agent to form the ruthenium carbene complex precursor. Methods of preparing a ruthenium vinylcarbene complex are also disclosed. In some embodiments, preparing a ruthenium carbene complex includes converting a ruthenium carbene complex precursor into a ruthenium carbene complex having a structure (PR1R2R3)2Cl2Ru═CH—R4, wherein R1, R2, R3, and R4 are defined herein.
Claims9
A method for preparing a ruthenium vinylcarbene complex comprising:
- reacting a ruthenium refinery salt with a L-type ligand and a reducing agent to form a ruthenium carbene complex precursor, the ruthenium refinery salt being an ammonium salt of a halogen-containing ruthenium complex, wherein the halogen-containing ruthenium complex comprises chlorine, and where the L-type ligand comprises a cyclic olefin;
- converting the ruthenium carbene complex precursor into a ruthenium hydrido halide complex;
- and
- reacting the ruthenium hydrido halide complex with a propargyl halide to form the ruthenium vinylcarbene complex.
Dependencies are inferred from the claim text.