Abstract: The synthesis and structure of beta-diketiminate manganese compounds are described, as well as their use as catalysts for the hydrosilylation and hydroboration of unsaturated organic compounds and main group element-main group element bond formation via dehydrogenative coupling.

Abstract: Provided are catalysts, methods of making catalysts, methods of using catalysts, and copolymers made utilizing the catalysts. The catalyst has a metal salen complex group, a bridging group, and one or more co-catalyst groups. The metal salen complex group is attached to the bridging group and the bridging group is attached to the co-catalyst group. The copolymers made utilizing the catalysts are polyesters or polycarbonates.

Abstract: The invention describes phospho-amino pincer-type ligands, metal complexes thereof, and catalytic methods comprising such metal complexes for conversion of carbon dioxide to methanol, conversion of aldehydes into alcohols, conversion of aldehydes in the presence of a trifluoromethylation agent into trifluorinated secondary alcohols, cycloaddition of carbon dioxide to an epoxide to provide cyclic carbonates or preparation of an amide from the combination of an alcohol and an amine.

Abstract: The present invention provides a carbon nitride-based photocatalyst and a preparation method thereof. The photocatalyst is prepared by reaction of melem with 3,3?,4,4?-benzophenonetetracarboxylic dianhydride. The photocatalyst according to an embodiment of the present invention achieves energy level matching in structure between the melem structure and the 3,3?,4,4?-benzophenonetetracarboxylic dianhydride, reduces a singlet-triplet energy gap (?EST), promotes an intersystem crossing process, thereby enhancing the singlet oxygen production and improving the selective photocatalytic oxidation ability.

Abstract: The invention is directed to ruthenium-based metathesis catalysts of the Grubbs-Hoveyda type. The new 2-aryloxy-substituted ruthenium catalysts described herein reveal rapid initiation behavior. Further, the corresponding styrene-based precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from styrene-based precursors which can be prepared in a cost-effective manner. The new Grubbs-Hoveyda type catalysts are suitable to catalyze ring-closing metathesis (RCM), cross metathesis (CM) and ring-opening metathesis polymerization (ROMP). Low catalyst loadings are necessary to convert a wide range of substrates including more complex and critical substrates via metathesis reactions at low to moderate temperatures in high yields within short reaction times.

Abstract: Provided are a phosphazene compound, a method for preparing a phosphazene compound and a method for producing a polymer with a phosphazene compound as a catalyst. The compound of formula (I) or a solvate thereof, where A is a six- or eight-membered ring consisting of repeated P?N, and B is at least one of unsubstituted or substituted C1-6 alkylamino, unsubstituted or substituted C1-6 cycloalkylamino, unsubstituted or substituted arylamino, or halogen, and B is attached to A at phosphorus in P?N, where R is unsubstituted or substituted C1-6 alkyl, unsubstituted or substituted C1-6 cycloalkyl, unsubstituted or substituted aryl, or unsubstituted or substituted benzyl, or R forms C1-6 heterocycloalkyl together with N attached thereto.

Abstract: Disclosed is a composite catalyst, comprising carbon in a continuous phase and Raney alloy particles in a dispersed phase. The Raney alloy particles are dispersed evenly or unevenly in the carbon in a continuous phase, and the carbon in a continuous phase is obtained by carbonizing at least one carbonizable organic substance. The catalyst has good particle strength, high catalytic activity, and good selectivity.

Abstract: Palladium catalysts, methods of synthesizing palladium-carbene catalysts, and methods of producing chromones and aurones using palladium-N-heterocyclic carbene (NHC) catalysts are provided. In some implementations, the palladium catalysts include a bridged palladium catalyst with distorted square planar geometry around the center palladium atom. The catalysts can be used in cyclocarbonylative Sonogashira cross-coupling reactions to produce chromones and aurones at a high yield. The selectivity of the catalysts can be adjusted by adjusting reaction conditions.

Abstract: The present invention relates to an oligomerization catalyst including a transition metal or transition metal precursor, a halogen-substituted organic ligand, and a heteroatom ligand, and to a method for selectively preparing 1-hexene or 1-octene from ethylene using the catalyst.

Abstract: The present invention is directed to reaction mixtures comprising a water-surfactant mixture, wherein the catalyst comprises a compound with solubilizing groups. This technology improves the solubility of the reaction components in the water-surfactant mixture and thereby, greatly increases the productivity and selectivity of the chemical reaction.

Abstract: Disclosed herein are methods to rejuvenate a deactivated hydroformylation catalyst solution wherein the solution comprises rhodium, polyphosphoramidite ligands, and polyphosphoramidite ligand degradation products. In some embodiments, such methods comprise adding a peroxide to the deactivated hydroformylation catalyst solution.

Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.

Abstract: The present invention provides a method for preparing rhodium (III) 2-ethylhexanoate solutions which supplies the reaction product with higher space yield, as well as lower sodium and chloride ion content. An aqueous solution of an alkali salt of 2-ethylhexanoate is thereby initially converted with a rhodium (III) precursor. The rhodium (III) precursor is selected from rhodium (III) chloride solution, rhodium (III) chloride hydrate, and rhodium (III) nitrate. The mixture is heated for several hours. After cooling to room temperature, the rhodium (III) 2-ethylhexanoate formed is extracted from the aqueous solution with an alcohol that is immiscible in water or a carboxylic acid that is immiscible in water, and optionally washed with aqueous mineral acid. The rhodium (III) 2-ethylhexanoate solution obtainable in this way may be used directly as catalyst in hydroformylation reactions.

Abstract: The disclosed relates to a method for preparing an organic zinc catalyst used in the synthesis of a polyalkylene carbonate resin, an organic zinc catalyst provided therefrom, and a method for preparing a polyalkylene carbonate resin using the catalyst. The organic zinc catalyst according to the present disclosure includes a predetermined amount of Zr on the surface through a simple process, and thus can exhibit improved catalytic activity as compared to a conventional catalyst in the polymerization process for preparing a polyalkylene carbonate resin.

Abstract: The invention provides a new process for producing ruthenium complexes represented by the Formula 1. Invention provides also the use of ruthenium complexes represented by the Formula 1 as precatalysts and/or catalysts in olefin metathesis reactions.

Abstract: A macromolecules containing a metal and a use thereof as a catalyst are disclosed. The macromolecules containing a metal may be obtained by causing a ligand to react with a zinc compound or a cobalt compound. The ligand has an imidazole group that is bonded to a macromolecule via a linker. The metal-containing macromolecules are highly active as a catalyst, stable, and easy to recover and reuse.

Abstract: The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with catalytic activity tethered to a ligand that is coordinated to the active metal center of the complex.

Abstract: An internal electron donor compound for preparing ?-olefin polymerization catalyst component, including two kinds of electron donors; the proportion of the two kinds of electron donors in the compounding preparation of the catalyst is determined via designed experiments so as to obtain a catalyst component having good comprehensive performance or a particular performance. The electron donor compound of the present invention can be used in the preparation of ?-olefin polymerization and co-polymerization catalyst component, particular the preparation of propylene polymerization catalyst component, and is applicable to prepare the propylene polymerization catalyst component by reacting magnesium chloride-ethanolscomlex compound carrier with titanium tetrachloride and electron donors, or to directly prepare the propylene polymerization catalyst component by reacting magnesium chloride, alcohols, titanium tetrachloride, and internal electron donor.

Abstract: The subject invention provides synthetic compounds, and compound complexes having catalytic activities towards oxidation or oxygenation, and/or dehydrogenation of various substrates comprising C—H bonds. The catalysts of the subject invention comprise a dinuclear Cu(I)/Cu(II) center that can convert between a resting state and a reactive species. The subject invention also provides methods of using such catalysts for the oxidation of substrates comprising C—H bonds, e.g., hydrocarbons, to synthesize chemicals for use as pharmaceuticals and industrial feedstock.

Abstract: This present invention relates to a catalyst composition for a production process of ?-lactone from carbon dioxide and 1,3-butadiene that can efficiently catalyze the synthesis reaction of ?-lactone with good selectivity of ?-lactone, wherein said catalyst composition comprising: a) palladium metal complexes as shown in structure (I) [Formula should be inserted here] wherein, R1, R2, R3 and R4 independently represents a group selected from a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an amine group, or optionally an alkenyl group, an alkynyl group, a phenyl group, a benzyl group, or a cyclic hydrocarbon group comprising a hetero atom; and b) phosphorus compound selected from a phosphine group having a general formula [Formula should be inserted here], wherein R5 is selected from an alkyl group, a cycloalkyl group, or an aryl group.