The invention relates to monocarbonyl complexes of ruthenium and osmium with bi- and tridentate nitrogen and phosphine ligands. The invention relates to methods for preparing these complexes and the use of these complexes, isolated or prepared in situ, as catalysts for reduction reactions of ketones and aldehydes both via transfer hydrogenation or hydrogenation with hydrogen.

The invention relates to monocarbonyl complexes of ruthenium and osmium with bi- and tridentate nitrogen and phosphine ligands. The invention relates to methods for preparing these complexes and the use of these complexes, isolated or prepared in situ, as catalysts for reduction reactions of ketones and aldehydes both via transfer hydrogenation or hydrogenation with hydrogen.

The invention relates to monocarbonyl complexes of ruthenium and osmium with bi- and tridentate nitrogen and phosphine ligands. The invention relates to methods for preparing these complexes and the use of these complexes, isolated or prepared in situ, as catalysts for reduction reactions of ketones and aldehydes both via transfer hydrogenation or hydrogenation with hydrogen.

The present invention provides a vinylether compound of the following general formula (1), wherein R.sup.1 represents a monovalent hydrocarbon group having 1 to 15 carbon atoms, and the wavy line represents the E-form, the Z-form, or a mixture thereof. The present invention further provides a process for preparing 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde of the following formula of the following formula (2), the process comprising subjecting the vinylether compound (1) to a hydrolysis reaction to form 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde (2).

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The present invention provides a vinylether compound of the following general formula (1), wherein R.sup.1 represents a monovalent hydrocarbon group having 1 to 15 carbon atoms, and the wavy line represents the E-form, the Z-form, or a mixture thereof. The present invention further provides a process for preparing 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde of the following formula of the following formula (2), the process comprising subjecting the vinylether compound (1) to a hydrolysis reaction to form 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde (2).

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A process for producing isomerized olefins, branched aldehydes, branched alcohols, branched surfactants and other branched derivatives through isomerization, hydroformylation, hydrogenation, surfactant forming reactions and other derivative forming reactions.

A process for producing isomerized olefins, branched aldehydes, branched alcohols, branched surfactants and other branched derivatives through isomerization, hydroformylation, hydrogenation, surfactant forming reactions and other derivative forming reactions.

A recycle content propanol and method of making a recycle content propanol wherein the recycle content is derived directly or indirectly from the cracking of recycle content pyrolysis oil and/or gas. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.

A recycle content propanol and method of making a recycle content propanol wherein the recycle content is derived directly or indirectly from the cracking of recycle content pyrolysis oil and/or gas. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.

A Raney copper catalyst, a preparation method and use thereof are provided. The Raney copper catalyst includes aluminum, copper and a metal promoter, wherein the metal promoter comprises a combination of one or more of Ni, Fe, Mo, Co, Ag, Pd, Pt, Au and other elements. The preparation method includes performing high-temperature melting on a mixture containing a copper/aluminum alloy and the metal promoter to obtain a mixed metal cured compound, then smashing the mixed metal cured compound to obtain a catalyst precursor, and subsequently activating to obtain the Raney copper catalyst. The Raney copper catalyst exhibits a capability on hydrogenation reaction based on synergistic effects between metal copper and different promoter metals. Compared with the Raney copper catalyst without metal promoters, when used for preparing 1,3-propanediol through hydrogenation of 3-hydroxypropionaldehyde aqueous solution, the Raney copper catalyst is higher in activity and better in stability.