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Start Over Author "K. Barry Sharpless" Publisher john wiley & sons, inc.
8 results on '"K. Barry Sharpless"'

3. Osmium-catalyzed vicinal oxyamination of olefins byN-chloro-N-argentocarbamates: ethylthreo-[1-(2-hydroxy-1,2-diphenylethyl)]carbamate

Author

K. Barry Sharpless and Eugenio Herranz

Subjects
Carbamate, Chemistry, medicine.medical_treatment, chemistry.chemical_element, Halogenation, Solvent, chemistry.chemical_compound, Osmium tetroxide, Reagent, medicine, Organic chemistry, Petroleum ether, Osmium, Vicinal
Abstract

Osmium-catalyzed vicinal oxyamination of olefins by N-chloro-N-argentocarbamates: ethyl threo-[1-(2-hydroxy-1,2-diphenylethyl)]carbamate product: ethyl threo-1-(2-hydroxy-1,2-diphenylethyl)carbamate solvent: 50 mL of petroleum ether Keywords: addition, to CC; halogenation, chlorination; 1% osmium tetroxide reagent

Published
2003
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4. 3-[(1S)-1,2-Dihydroxyethyl]-1,5-Dihydro-3H-2,4-Benzodioxepine

Author

K. Barry Sharpless and Ryu Oi

Subjects
chemistry.chemical_compound, Annulation, chemistry, Thioacetal, Acetal, Enantioselective synthesis, Organic chemistry, Ether, Potassium osmate, Dihydroquinidine, Tetrahydrofuran
Abstract

3-[(1S)-1,2-dihydroxyethyl]-1,5-dihydro-3H-2,4-benzodioxepine intermediate: 1,2-benzenedimethanol intermediate: 3-vinyl-1,5-dihydro-3H-2,4-benzodioxepine catalyst: dihydroquinidine 9-O-(9′-phenanthryl) ether and, [0.75 g, (1.5 mmol, 1 mol%, 0.0057 M in the organic phase)] product: 3-[(1S)-1,2-dihydroxyethyl)]-1,5-dihydro-3H-2,4-benzodioxepine Keywords: acetal (and thioacetal) formation; addition, to CC; addition, to CO; annulation, heterocyclic-[M,N]; cyclization, condensation; metal-catalyzed reactions, osmium; oxidation, CC CHOHCHOH; reduction, CO2R CH2OH; stereoselective reactions, enantioselective; assay methods, of enantiomeric purity of alcohols by HPLC analysis of Mosher ester; tetrahydrofuran; lithium aluminum hydride; potassium osmate, poison

Published
2003
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5. Deoxygenation of Epoxides with Lower Valent Tungsten Halides:trans-Cyclododecene

Author

K. Barry Sharpless and Martha A. Umbreit

Subjects
chemistry.chemical_compound, chemistry, Butyllithium, Halide, Organic chemistry, chemistry.chemical_element, Tungsten, Medicinal chemistry, Deoxygenation, Tetrahydrofuran
Abstract

Deoxygenation of epoxides with lower valent tungsten halides: trans-cyclododecene product: trans-cyclododecene Keywords: deoxygenation; reduction, miscellaneous; tetrahydrofuran; butyllithium (concd)

Published
2003
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6. Osmium-Catalyzed Vicinal Oxyamination of Olefins by Chloramine-T:cis-2-(p-Toluenesulfonamido)Cyclohexanol and 2-Methyl-3-(p-Toluenesulfonamido)-2-Pentanol

Author

Eugenio Herranz and K. Barry Sharpless

Subjects
chemistry.chemical_compound, chemistry, Osmium tetroxide, Reagent, Chloramine-T, Cyclohexanol, chemistry.chemical_element, Organic chemistry, 2-Pentanol, Osmium, Vicinal, Catalysis
Abstract

Osmium-catalyzed vicinal oxyamination of olefins by chloramine-T: cis-2-(p-toluenesulfonamido)cyclohexanol and 2-methyl-3-(p-toluenesulfonamido)-2-pentanol product: cis-2-(p-toluenesulfonamido)cyclohexanol product: 2-methyl-3-(p-toluenesulfonamido)-2-pentanol Keywords: addition, to CC; 1% osmium tetroxide reagent; osmium tetroxide

Published
2003
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7. (R,R)-1,2-Diphenyl-1,2-Ethanediol (Stilbene Diol)

Author

Blaine H. McKee, Declan G. Gilheany, and K. Barry Sharpless

Subjects
chemistry.chemical_compound, chemistry, Osmium tetroxide, Diol, Enantioselective synthesis, chemistry.chemical_element, Organic chemistry, Osmium, Stereoselectivity, Enantiomer
Abstract

(R,R)-1,2-diphenyl-1,2-ethanediol (stilbene diol) product: (R,R)-1,2-diphenyl-1,2-ethanediol (stilbene diol) Keywords: addition, to CC; metal-catalyzed reactions, osmium; oxidation, CC CHOH-CHOH; stereoselective reactions, enantioselective; assay methods, of enantiomeric purity of alcohols by NMR analysis of Mosher esters; osmium tetroxide

Published
2003
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8. Enantioselective Epoxidation of Allylic Alcohols: (2S,3S)-3-Propyloxiranemethanol

Author

K. Barry Sharpless, Christopher M. Exon, Ronald Regenye, and J. Gordon Hill

Subjects
chemistry.chemical_compound, Annulation, Allylic rearrangement, chemistry, Reagent, Enantioselective synthesis, Anhydrous, Organic chemistry, Epoxide, Enantiomer, Toluene
Abstract

Enantioselective epoxidation of allylic alcohols: (2S,3S)-3-propyloxiranemethanol product: (2S,3S)-3-propyloxiranemethanol Keywords: addition, to CC; annulation, heterocyclic-[3]; epoxide formation; assay methods, for tert-butyl hydroperoxide, in toluene by NMR analysis; assay methods, of enantiomeric purity of alcohols by GLC analysis of mosher ester; assay methods, of enantiomeric purity by NMR analysis with shift reagent; tert-butyl hydroperoxide, anhydrous in toluene

Published
2003
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