Search results for "Henry reaction"

showing 5 items of 5 documents

Concise asymmetric synthesis of Linezolid through catalyzed Henry reaction

2013

A new asymmetric synthesis of the antibiotic Linezolid was performed through a copper-catalyzed Henry reaction as the key step. The use of camphor-derived aminopyridine ligands helped to improve the yields of the chiral precursor and to obtain Linezolid in good overall yield and enantiomeric excess.

Nitroaldol reactionChemistryorganic chemicalsGeneral Chemical EngineeringEnantioselective synthesisSettore CHIM/06 - Chimica OrganicaGeneral Chemistrybiochemical phenomena metabolism and nutritionbacterial infections and mycosesCatalysischemistry.chemical_compoundYield (chemistry)Linezolidpolycyclic compoundsOrganic chemistryheterocyclic compoundsEnantiomeric excessasymmetric synthesis linezolid henry reaction antibioticsRSC Advances
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A catalytic highly enantioselective direct synthesis of 2-bromo-2-nitroalkan-1-ols through a Henry reaction.

2008

Highly enantiomerically enriched 2-bromo-2-nitroalkan-1-ols are prepared by direct condensation of aliphatic and aromatic aldehydes with bromonitromethane in the presence of a catalytic amount of copper(II) acetate and a C1-symmetric camphorderived amino pyridine ligand. Blay Llinares, Gonzalo, Gonzalo.Blay@uv.es ; Hernandez Olmos, Victor, Victor.Hernandez@uv.es ; Pedro Llinares, Jose Ramon, Jose.R.Pedro@uv.es

Nitroaldol reactionEnrichedCondensationPyridinesBromonitromethaneUNESCO::QUÍMICACatalytic ; Synthesis ; Henry reaction ; Enriched ; CondensationMolecular Conformationchemistry.chemical_elementAcetatesLigands:QUÍMICA [UNESCO]CatalysisCatalysisSynthesisMaterials ChemistryOrganic chemistryCatalyticAldehydesEthaneChemistryUNESCO::QUÍMICA::Química inorgánicaCondensationMetals and AlloysEnantioselective synthesisStereoisomerismGeneral Chemistry:QUÍMICA::Química inorgánica [UNESCO]Nitro CompoundsCopperPyridine ligandSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsAlcoholsCeramics and CompositesHenry reactionCopperChemical communications (Cambridge, England)
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Metal-Organic Frameworks as Versatile Heterogeneous Solid Catalysts for Henry Reactions

2021

Metal–organic frameworks (MOFs) have become one of the versatile solid materials used for a wide range of applications, such as gas storage, gas separation, proton conductivity, sensors and catalysis. Among these fields, one of the more well-studied areas is the use of MOFs as heterogeneous catalysts for a broad range of organic reactions. In the present review, the employment of MOFs as solid catalysts for the Henry reaction is discussed, and the available literature data from the last decade are grouped. The review is organized with a brief introduction of the importance of Henry reactions and structural properties of MOFs that are suitable for catalysis. The second part of the review dis…

Nitroaldol reactionMaterials sciencePharmaceutical ScienceReviewHeterogeneous catalysisCatalysisAnalytical ChemistryCatalysislcsh:QD241-441metal–organic frameworkslcsh:Organic chemistryCatalytic DomainDrug DiscoveryUreaGas separationAminesPhysical and Theoretical ChemistryMetal-Organic FrameworksHeterogeneous catalysisPrimary (chemistry)Organic ChemistryAmidesOrganic reactionChemical engineeringChemistry (miscellaneous)Molecular MedicineMetal-organic frameworkAmine gas treatingHenry reactionCopperMolecules
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ASYMMETRIC SYNTHESIS OF LINEZOLID THROUGH CATALYZED HENRY REACTION

2013

Linezolid 1 is an antibacterial oxazolidinone approved by FDA in 2000 for the treatment of fastidious bacterial infections.1 The asymmetric synthesis of Linezolid-like molecules make use of the chiral pool approach, through the so-called Manninen reaction.2 This strategy requires the use of BuLi, low temperature and a long elaboration of the acetamide chain. Curiously, the only catalyzed approach toward the asymmetrical synthesis of Linezolid was just recently reported, and belongs to the use of proline-derived catalysts in aldol reactions as the key step.3 This procedure is quite interesting except for the low yield. Here we report a new synthesis of Linezolid, based on a Cu(II)-catalyzed …

Settore CHIM/06 - Chimica OrganicaLineolid Henry reaction Asymmetric synthesis antibacterials
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Organocatalytic Enantioselective Vinylogous Henry Reaction of 3,5-Dimethyl-4-nitroisoxazole with Trifluoromethyl Ketones

2017

The enantioselective vinylogous Henry reaction of 3,5-dimethyl-4-nitroisoxazole with trifluoromethyl ketones employing a bifunctional squaramide organocatalyst has been developed. A series of isoxazole bearing trifluoromethyl-substituted tertiary alcohols, 2-substituted (R)-1,1,1-trifluoro-3-(3-methyl-4-nitroisoxazol-5-yl)propan-2-ols, were obtained under these mild reaction conditions in good yields and moderate to good enantioselectivities

trifluoromethyl ketoneReaction conditionsNitroaldol reactionTrifluoromethyl010405 organic chemistryasymmetric synthesisisoxazoleOrganic ChemistryEnantioselective synthesisSquaramide010402 general chemistry01 natural sciencesCatalysis0104 chemical scienceschemistry.chemical_compoundchemistrysquaramide organocatalystvinylogous Henry reactionOrganic chemistryIsoxazoleBifunctionalTertiary alcoholsSynthesis
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