E.i. Dupont De Nemours and Company

Other

George Yanwu Li

Paul Joseph Fagan

Lin Wang

Zhibin Guan

Novel phosphine and phosphine oxide ligands are prepared using polymeric supports. These compounds can be easily cleaved from the support, and along with the corresponding supported compounds, used as ligands in the preparation of novel, metal-complexed catalysts.

Polymer-supported phosphorus ligands for catalysts

Polymer-supported phosphorus ligands for catalysis

Novel reactions used to prepare phosphole and bisphosphole compounds are detailed. Novel phosphole compounds and metal coordination compounds of phosphole and bisphosphole compounds are also provided. These metal coordination compounds are useful as catalysts for the polymerization or olefins with carbon monoxide and for the polymerization of acrylic monomers.

Phosphole and diphosphole ligands for catalysis

Phosphole and dishosphole ligands for catalysis

Phosphine oxide and sulfoxide compounds were used with transition metals, preferably palladium and nickel, to produce biaryls, arylthiols, arylphosphine oxides and arylamines via cross-coupling reactions with aryl halides and arylboronic acids, aryl Grignard reagents, thiols, phosphine oxides or amines.

Catalysis using phosphine oxide and sulfoxide compounds

The invention relates to the combinatorial approaches to the preparation of novel polymer-supported heteroatom bidentate (PN, PO, PS) ligand libraries and the corresponding free compounds after cleavage from the supports. These compounds are useful as novel ligands in the preparation of metal-containing catalysts.

Polymer-supported synthesis of heteroatom bidentate ligands for catalysis

Novel phosphine and phosphine oxide ligands are prepared using polymeric supports. These compounds can be easily cleaved from the support, and along with the corresponding supported compounds, used as ligands in the preparation of novel, metal-complexed catalysts. The ligands are obtained by combinatorial synthesis. A process for preparing coumarin by contacting salicylaldehyde with an acrylate is also provided.

Phosphine oxide compounds were used with transition metals, preferably palladium and nickel, to produce biaryls and arylamines via cross-coupling reactions with aryl halides and arylboronic acids, aryl Grignard reagents or amines.

Catalysis using phosphine oxide compounds

Phosphine oxide compounds were used with transition metals, preferably palladium, to produce biaryls and arylamines via cross-coupling reactions with aryl halides and arylboronic acids or amines.

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Wilmington, DE, United States of America

George Yanwu Li