135853-90-6

Basic information

• Product Name: {2,5-diphenyl-3,4-bis(4-methoxyphenyl)cyclopentadienone}tricarbonylruthenium⁽⁰⁾
• Synonyms: {2,5-diphenyl-3,4-bis(4-methoxyphenyl)cyclopentadienone}tricarbonylruthenium⁽⁰⁾
• CAS NO: 135853-90-6
• Molecular Weight: 629.631
• Mol File: 135853-90-6.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: {2,5-diphenyl-3,4-bis(4-methoxyphenyl)cyclopentadienone}tricarbonylruthenium⁽⁰⁾(CAS DataBase Reference)
• NIST Chemistry Reference: {2,5-diphenyl-3,4-bis(4-methoxyphenyl)cyclopentadienone}tricarbonylruthenium⁽⁰⁾(135853-90-6)
• EPA Substance Registry System: {2,5-diphenyl-3,4-bis(4-methoxyphenyl)cyclopentadienone}tricarbonylruthenium⁽⁰⁾(135853-90-6)

Safety Data

• Hazardous Substances Data: 135853-90-6(Hazardous Substances Data)

Upstream product

• 15243-33-1 dodecacarbonyl-triangulo-triruthenium 
• 668-29-1 3,4-bis(4-methoxyphenyl)-2,5-diphenyl-2,4-cyclopentadien-1-one 

Downstream Products

• 135853-87-1 {2,5-(C6H5)2-3,4-(4-MeOC6H4)2C4CO}2H(μ-H)(CO)4Ru2 

Relevant articles and documents

Application of silica-supported Shvo's catalysts for transfer hydrogenation of levulinic acid with formic acid

Two triethoxysilylpropoxy-functionalized Shvo's catalyst precursors were synthesized and characterized by IR, NMR and HRMS. Both covalent anchoring and sol-gel methods were used for their immobilization. The homogeneous and immobilized catalysts were used for the transfer hydrogenation of levulinic acid with formic acid to form hydroxyvaleric acid, which was readily dehydrated to yield gamma-valerolactone. The immobilized catalysts prepared by the sol-gel method showed higher activity than the covalently grafted catalysts. Hot filtration tests showed no leaching of the immobilized Shvo's catalysts, opening the door to facile catalyst recycling.

Catalytic disproportionation of aldehydes with ruthenium complexes

It was discovered that the ruthenium complex [(C4Ph4COHOCC4Ph4)(μ-H)] [(CO)4Ru2] (2), as well as other isostructural Ru complexes, in the presence of a catalytic amount of formic acid, catalyzes the homogeneous bimolecular disproportionation reaction of aldehydes to give esters: 2RCHO → RCOOCH2R. The reaction was found to be general and compatible with a variety of aliphatic and aromatic aldehydes and can be carried out in the presence or absence of solvent under mild conditions. It is characterized by an excellent efficiency with an initial turnover frequency reaching 5000 h-1, a measured overall turnover number of ca. 20000, and high conversion, yield, and selectivity. Increasing the electron density on the metal and the ligand was found to accelerate the reaction. Kinetic studies indicate that the rate = k[catalyst]1/2[aldehyde]. The rate also depends on the initial formic acid concentration. A stoichiometric reaction of complex 2 with formic acid, monitored by infrared spectroscopy, shed light on the identity of the active catalytic species. No kinetic isotope effect could be detected by using PhCDO and DCOOD as reactants. Consequently, a mechanism and a detailed catalytic cyle for the bimolecular transformation of aldehydes to esters were proposed.