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Shvo Catalyst
The Shvo catalyst is an organoruthenium compound that catalyzes the hydrogenation of polar functional groups including aldehydes, ketones and imines. The compound is of academic interest as an early example of a catalyst for transfer hydrogenation that operates by an "outer sphere mechanism". Related derivatives are known where p-tolyl replaces some of the phenyl groups. Shvo's catalyst represents a subset of homogeneous hydrogenation catalysts that involves both metal and ligand in its mechanism. Synthesis and structure The catalyst is named after Youval Shvo, who uncovered it through studies on the effect of diphenylacetylene on the catalytic properties of triruthenium dodecacarbonyl. The reaction of diphenylacetylene and Ru3(CO)12 gives the piano stool complex . Subsequent hydrogenation of this tricarbonyl affords Shvo's catalyst. Y. Blum, D. Reshef, and Y. Shvo. H-transfer catalysis with Ru3(CO)12. Tetrahedron Lett. 22(16) 1981, pp. 1541-1544. Blum, Y.; Shvo, Y. Isr. J. Chem. 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organoruthenium Compound
Organoruthenium chemistry is the chemistry of organometallic compounds containing a carbon to ruthenium chemical bond. Several organoruthenium catalysts are of commercial interest and organoruthenium compounds have been considered for cancer therapy. The chemistry has some stoichiometric similarities with organoiron chemistry, as iron is directly above ruthenium in group 8 of the periodic table. The most important reagents for the introduction of ruthenium are ruthenium(III) chloride and triruthenium dodecacarbonyl. In its organometallic compounds, ruthenium is known to adopt oxidation states from -2 ( u(CO)4sup>2−) to +6 ( uN(Me)4sup>−). Most common are those in the 2+ oxidation state, as illustrated below. File:Grubbs Catalyst 1st Generation.svg, 1st generation Grubbs catalyst File:ShvoCat.png, Shvo catalyst File:RuCymCl2.png, (cymene)ruthenium dichloride dimer File:Trirutheniumdodecacarbonyl.svg, triruthenium dodecacarbonyl. File:Chloro(cyclopentadienyl)bis(triphenylphos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shvo Catalyst Carbonyl Reduction
SHVO is a real estate investment and development company based in New York City with offices in Miami, San Francisco, Los Angeles, and Chicago. It purchases and develops high end properties in the United States and internationally. SHVO was founded by Michael Shvo who serves as the company Chairman and CEO. History 2004-2012; Early history SHVO was founded by real estate developer Michael Shvo in 2004. Prior to that time, Shvo worked as a real-estate broker with Douglas Elliman, the largest brokerage in New York. In 2003, at the age of 30, he achieved more than $300 million in sales from more than 400 deals, becoming the firm's top broker. Through 2008, SHVO performed $15 billion in real estate transactions worldwide, including Nurai, a private island off the coast of Abu Dhabi. Additional developments in New York included the Bryant Park Tower, The Lumiere on 53rd Street in Manhattan, Gramercy Starck designed by Philippe Starck, Jade by Jade Jagger, Fultonhaus, as well as Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organoruthenium Compounds
Organoruthenium chemistry is the chemistry of organometallic compounds containing a carbon to ruthenium chemical bond. Several organoruthenium catalysts are of commercial interest and organoruthenium compounds have been considered for cancer therapy. The chemistry has some stoichiometric similarities with organoiron chemistry, as iron is directly above ruthenium in group 8 of the periodic table. The most important reagents for the introduction of ruthenium are ruthenium(III) chloride and triruthenium dodecacarbonyl. In its organometallic compounds, ruthenium is known to adopt oxidation states from -2 ( u(CO)4sup>2−) to +6 ( uN(Me)4sup>−). Most common are those in the 2+ oxidation state, as illustrated below. File:Grubbs Catalyst 1st Generation.svg, 1st generation Grubbs catalyst File:ShvoCat.png, Shvo catalyst File:RuCymCl2.png, (cymene)ruthenium dichloride dimer File:Trirutheniumdodecacarbonyl.svg, triruthenium dodecacarbonyl. File:Chloro(cyclopentadienyl)bis(triphenylph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shvo Cat Alkylation Of Amine
SHVO is a real estate investment and development company based in New York City with offices in Miami, San Francisco, Los Angeles, and Chicago. It purchases and develops high end properties in the United States and internationally. SHVO was founded by Michael Shvo who serves as the company Chairman and CEO. History 2004-2012; Early history SHVO was founded by real estate developer Michael Shvo in 2004. Prior to that time, Shvo worked as a real-estate broker with Douglas Elliman, the largest brokerage in New York. In 2003, at the age of 30, he achieved more than $300 million in sales from more than 400 deals, becoming the firm's top broker. Through 2008, SHVO performed $15 billion in real estate transactions worldwide, including Nurai, a private island off the coast of Abu Dhabi. Additional developments in New York included the Bryant Park Tower, The Lumiere on 53rd Street in Manhattan, Gramercy Starck designed by Philippe Starck, Jade by Jade Jagger, Fultonhaus, as well as Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ynone
In organic chemistry, an ynone is an organic compound containing a ketone () functional group and a triple bond. Many ynones are α,β-ynones, where the carbonyl and alkyne groups are conjugated. Capillin is a naturally occurring example. Some ynones are not conjugated. Synthesis of α,β-ynones One method for synthesizing ynones is the acyl substitution reaction of an alkynyldimethylaluminum with an acyl chloride. An alkynyldimethylaluminum compound is the reaction product of trimethylaluminum and a terminal alkyne. An alternative is the direct coupling of an acyl chloride with a terminal alkyne, using a copper-based nanocatalyst: Other methods utilize an oxidative cleavage of an aldehyde, followed by reaction with a hypervalent alkynyl iodide, using a gold catalyst. An alternative but longer synthetic method involves the reaction of an alkynyllithium compound with an aldehyde. The reaction produces a secondary alcohol that then can be oxidized via the Swern oxidation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shvo Cat Propargyl Alcohol Amination
SHVO is a real estate investment and development company based in New York City with offices in Miami, San Francisco, Los Angeles, and Chicago. It purchases and develops high end properties in the United States and internationally. SHVO was founded by Michael Shvo who serves as the company Chairman and CEO. History 2004-2012; Early history SHVO was founded by real estate developer Michael Shvo in 2004. Prior to that time, Shvo worked as a real-estate broker with Douglas Elliman, the largest brokerage in New York. In 2003, at the age of 30, he achieved more than $300 million in sales from more than 400 deals, becoming the firm's top broker. Through 2008, SHVO performed $15 billion in real estate transactions worldwide, including Nurai, a private island off the coast of Abu Dhabi. Additional developments in New York included the Bryant Park Tower, The Lumiere on 53rd Street in Manhattan, Gramercy Starck designed by Philippe Starck, Jade by Jade Jagger, Fultonhaus, as well as Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tishchenko Reaction
The Tishchenko reaction is an organic chemical reaction that involves disproportionation of an aldehyde in the presence of an alkoxide. The reaction is named after Russian organic chemist Vyacheslav Tishchenko, who discovered that aluminium alkoxides are effective catalysts for the reaction. In the related Cannizzaro reaction, the base is sodium hydroxide and then the oxidation product is a carboxylic acid and the reduction product is an alcohol. History The reaction involving benzaldehyde was discovered by Claisen using sodium benzylate as base. The reaction produces benzyl benzoate. Enolizable aldehydes are not amenable to Claisen's conditions. Vyacheslav Tishchenko discovered that aluminium alkoxides allowed the conversion of enolizable aldehydes to esters. Examples * The Tishchenko reaction of acetaldehyde gives the commercially important solvent ethyl acetate. The reaction is catalyzed by aluminium alkoxides. * The Tishchenko reaction is used to obtain isobu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shvo Imine Reduction
SHVO is a real estate investment and development company based in New York City with offices in Miami, San Francisco, Los Angeles, and Chicago. It purchases and develops high end properties in the United States and internationally. SHVO was founded by Michael Shvo who serves as the company Chairman and CEO. History 2004-2012; Early history SHVO was founded by real estate developer Michael Shvo in 2004. Prior to that time, Shvo worked as a real-estate broker with Douglas Elliman, the largest brokerage in New York. In 2003, at the age of 30, he achieved more than $300 million in sales from more than 400 deals, becoming the firm's top broker. Through 2008, SHVO performed $15 billion in real estate transactions worldwide, including Nurai, a private island off the coast of Abu Dhabi. Additional developments in New York included the Bryant Park Tower, The Lumiere on 53rd Street in Manhattan, Gramercy Starck designed by Philippe Starck, Jade by Jade Jagger, Fultonhaus, as well ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogenation
Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a Catalysis, catalyst such as nickel, palladium or platinum. The process is commonly employed to redox, reduce or Saturated and unsaturated compounds, saturate organic compounds. Hydrogenation typically constitutes the addition of pairs of hydrogen atoms to a molecule, often an alkene. Catalysts are required for the reaction to be usable; non-catalytic hydrogenation takes place only at very high temperatures. Hydrogenation reduces Double bond, double and Triple bond, triple bonds in hydrocarbons. Process Hydrogenation has three components, the Saturated and unsaturated compounds, unsaturated substrate, the hydrogen (or hydrogen source) and, invariably, a catalyst. The redox, reduction reaction is carried out at different temperatures and pressures depending upon the substrate and the activity of the catalyst. Related or competing reactions The same ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridging Ligand
In coordination chemistry, a bridging ligand is a ligand that connects two or more atoms, usually metal ions. The ligand may be atomic or polyatomic. Virtually all complex organic compounds can serve as bridging ligands, so the term is usually restricted to small ligands such as pseudohalides or to ligands that are specifically designed to link two metals. In naming a complex wherein a single atom bridges two metals, the bridging ligand is preceded by the Greek letter mu, μ, with a subscript number denoting the number of metals bound to the bridging ligand. μ2 is often denoted simply as μ. When describing coordination complexes care should be taken not to confuse μ with η ('eta'), which relates to hapticity. Ligands that are not bridging are called terminal ligands. List of bridging ligands Virtually all ligands are known to bridge, with the exception of amines and ammonia. Common bridging ligands include most of the common anions. Many simple organic ligands form str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knölker Complex
The Knölker complex is an organoiron compound, which is a catalyst for transfer hydrogenation. The complex features an hydroxycyclopentadienyl ligand bound to an Fe(CO)2H centre. It is generated by the corresponding cyclopentadienone tricarbonyl by treatment with base followed by acidification. The compound is related to the organoruthenium compound called Shvo's complex, a hydroxycyclopentadienyl derivative that also functions as a catalyst for hydrogenation Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a Catalysis, catalyst such as nickel, palladium or platinum. The process is commonly employed to redox, reduce or S .... References {{reflist Organoiron compounds Carbonyl complexes Hydrogenation catalysts Trimethylsilyl compounds Metal hydrides Cyclopentadienyl complexes Half sandwich compounds Iron(II) compounds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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