摘要:
Novel polymeric rhodium catalysts having repeating subunits of Formula (I), wherein R1-R8, X, A, m, n and p are as defined in the application, are described along with methods of using these catalysts, as well as precursors therefor, in the chemical synthesis transformations.
摘要:
Hyghly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.
摘要:
The present invention disclosed a kind of ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The invention also relates to preparation and use of new ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The ruthenium complex ligand I and ruthenium complex II in the present invention have the following structures:
The immobilized ruthenium complex catalysts in the present invention have the structure of IV :
In the present invention, the ruthenium complexes and immobilized ruthenium complex catalysts have several significant advantages, e.g., high catalytic activity, high stability, easy recovery and reusability.
摘要:
Methods of preparing libraries of multivalent arrays and libraries made by the methods. Component multivalent arrays of a library have defined length, defined terminal functionality and defined pendant functional groups. Methods include the preparation of a multivalent array having the steps of polymerizing at least one monomer comprising at least one polymerizable group and at least one latent reactive group in the presence of a metal carbene catalyst to form a polymer template comprising at least one latent reactive group; and combining the polymer template with at least one functionalizing reagent comprising at least one reactive group under conditions effective to react the latent reactive group of the polymer template with the reactive group of the functionalizing reagent to form a multivalent array. Methods further include preparation of a telechelic polymer (mono- or bi-telechelic) that use a ruthenium or osmium carbene catalyst and a capping agent, at least one of which is functionalized.
摘要:
The present invention disclosed a kind of ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The invention also relates to preparation and use of new ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The ruthenium complex ligand I and ruthenium complex II in the present invention have the following structures: The immobilized ruthenium complex catalysts in the present invention have the structure of IV : In the present invention, the ruthenium complexes and immobilized ruthenium complex catalysts have several significant advantages, e.g., high catalytic activity, high stability, easy recovery and reusability.
摘要:
The present invention disclosed a kind of ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The invention also relates to preparation and use of new ruthenium complex ligands and ruthenium complexes in metathesis reactions as catalysts have several significant advantages, e.g., high catalytic activity, high stability, easy recovery and reusability. The ruthenium complex ligand I and ruthenium complex II in the present invention have the following structures:
摘要:
The present invention disclosed a kind of ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The invention also relates to preparation and use of new ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The ruthenium complex ligand I and ruthenium complex II in the present invention have the following structures: The immobilized ruthenium complex catalysts in the present invention have the structure of IV : In the present invention, the ruthenium complexes and immobilized ruthenium complex catalysts have several significant advantages, e.g., high catalytic activity, high stability, easy recovery and reusability.
摘要:
The present invention disclosed a kind of ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The invention also relates to preparation and use of new ruthenium complex ligands, ruthenium complexes and immobilized ruthenium complex catalysts. The ruthenium complex ligand I and ruthenium complex II in the present invention have the following structures: The immobilized ruthenium complex catalysts in the present invention have the structure of IV : In the present invention, the ruthenium complexes and immobilized ruthenium complex catalysts have several significant advantages, e.g., high catalytic activity, high stability, easy recovery and reusability.