Search results for "Organo"

Although oxazolidinones are valuable intermediate compounds for industrial applications, no synthetic method is suitable for their production on a large scale owing to the use of reagents/catalysts that are hazardous or toxic to human health or ecotoxic for the environment. In this manuscript, we describe new and efficient catalysts, that is, the nontoxic hydrogen carbonate anion in combination with a potassium or diisobutylimidazolium ([iBu(2)IM]) countercation, for the conversion of -amino alcohols into cyclic oxazolidinones in high yields of 69 to 90%. Depending on the catalytic conditions, both catalysts could be easily recovered from the crude reaction products and reused several times…

chemistry.chemical_compoundHuman healthHydrogenchemistryOrganocatalysisReagentPotassiumchemistry.chemical_elementCarbonateOrganic chemistryGeneral MedicineCarbonCatalysisChemInform

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“Nonsolvent” Applications of Ionic Liquids in Organocatalysis

2012

This chapter is organized in three sections (see Figure 10.1 ): 2. Immobilization of ionic liquids and organocatalysts 2.1 Covalently attached “ ionic liquid ” moieties as supports 2.2 Covalently attached “ ionic liquid ” moieties as linkers 2.3 Covalently attached “ ionic liquid ” moieties as organocatalysts

chemistry.chemical_compoundIonic Liquids Organocatalysis Green Chemistry Asymmetric synthesischemistryOrganocatalysisIonic liquidOrganic chemistrySettore CHIM/06 - Chimica Organica

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Molecular Boxes Based on Hollow Organosilicon Micronetworks

1999

chemistry.chemical_compoundMaterials sciencePolymer sciencechemistryMechanics of MaterialsMechanical EngineeringOrganic chemistryGeneral Materials ScienceOrganosiliconAdvanced Materials

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Novel Applications of Dynamic NMR in Organic Chemistry

2003

Abstract This review article is oriented on NMR applications in studying various dynamic processes of organic molecules. The topic as a whole is too large to be covered exhaustively in one article or by one author. Therefore, the literature searches are limited mainly for the years 1999–2001. Further, many interesting branches joined essentially with organic chemistry such as supramolecular and organometallic chemistry are left outside this article because there exist recent reviews on these topics. Similarly, the theoretical background of dynamic NMR is not included. The nature of dynamic NMR itself is changing with the recent progress in computational possibilities to estimate the differe…

chemistry.chemical_compoundMaterials sciencechemistryChemical shiftSupramolecular chemistryOrganic chemistryDensity functional theoryOrganometallic chemistryOrganic molecules

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Photoinduced Cluster Formation of Coumarin-Labeled Organosilicon Micronetworks

2000

chemistry.chemical_compoundMaterials sciencechemistryMechanics of MaterialsMechanical EngineeringPolymer chemistryCluster (physics)General Materials SciencePhotochemistryCoumarinOrganosiliconAdvanced Materials

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ChemInform Abstract: Organocatalytic Enantioselective Aza-Friedel-Crafts Reaction of 2-Naphthols with Benzoxathiazine 2,2-Dioxides.

2015

An organocatalytic enantioselective aza-Friedel–Crafts addition of 2-naphthols to benzoxathiazine 2,2-dioxides is described using a quinine-derived bifunctional catalyst. The method allows the use of a wide range of aromatic compounds as nucleophiles, including 1-naphthol and sesamol, and benzoxathiazines 2,2-dioxides, expanding the existing state of the art enantioselective synthesis of aminomethylnaphthol derivatives.

chemistry.chemical_compoundNucleophileChemistryOrganocatalysisEnantioselective synthesisOrganic chemistryGeneral MedicineSesamolFriedel–Crafts reactionBifunctional catalystChemInform

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