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  • 1.
    Bäckvall, Jan-Erling
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Gogoll, Adolf
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Evidence for (π-allyl)palladium(II)(quinone) complexes in the palladium-catalyzed 1,4-diacetoxylation of conjugated dienes1988In: Tetrahedron Letters, ISSN 0040-4039, E-ISSN 1359-8562, Vol. 29, no 18, p. 2243-2246Article in journal (Refereed)
    Abstract [en]

    Evidence for a coordination of p-benzoquinone to palladium in [4-acetoxy-η3-(1,2,3)-cyclohexenyl]-palladium(II) complexes was provided by changes of the 1H NMR chemical shift values of the π-allyl protons and a decrease of the spin-lattice relaxation time constant for the p-benzoquinone protons.

    The intermediate (π-allyl)palladium(benzoquinone) complexes previously postulated in palladium-catalyzed 1,4-oxidations of 1,3-dienes were detected by NMR spectroscopy.

  • 2.
    Bäckvall, Jan-Erling
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Gogoll, Adolf
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Palladium‑Hydroquinone Catalysed Electrochemical 1,4‑Oxidation of Conjugated Dienes1987In: Journal of the Chemical Society. Chemical communications, ISSN 0022-4936, Vol. 16, p. 1236-1238Article in journal (Refereed)
    Abstract [en]

    The mediator system palladium(II)–hydroquinone was shown to catalyse the anodic oxidation of cyclohexa-1,3-diene in acetic acid to produce selectively either trans- or cis-1,4-diacetoxycyclohex-2-ene (1) depending on the conditions.

  • 3.
    Engdahl, Carin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Gogoll, Adolf
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Eklund, Ulf
    UMEA UNIV, DEPT ORGAN CHEM, NMR RES GRP, S-90187 UMEA, SWEDEN .
    Long‑Range Deuterium Isotope Effects on 13C NMR Shifts of Intramolecularly Hydrogen‑Bonded 9‑Hydroxyphenalen‑1‑ones1991In: Magnetic Resonance in Chemistry, ISSN 0749-1581, E-ISSN 1097-458X, Vol. 29, no 1, p. 54-62Article in journal (Refereed)
    Abstract [en]

    The 1H and 13C NMR spectra of 9-hydroxyphenalenone (1) and 9-hydroxy-2-methylphenalenone (2) have been completely assigned. Primary and secondary deuterium isotope effects were determined in three solvents (chloroform, acetone and dimethyl sulphoxide), including the effect of temperature on the secondary isotope effects. Both negative and large long-range secondary isotope effects were found for both 1 and 2. The average secondary isotope effects for corresponding carbons follow the same sign and magnitude pattern in both compounds.

  • 4.
    Gogoll, Adolf
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Plobeck, Niklas A.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Comparison of one- and two-dimensional techniques in the unambiguous 13C NMR spectral assignment of ellipticine and related indole derivatives1990In: Magnetic Resonance in Chemistry, ISSN 0749-1581, E-ISSN 1097-458X, Vol. 28, p. 635-641Article in journal (Refereed)
    Abstract [en]

    The 13C NMR spectra of several indole derivatives have been completely assigned by reverse detected one-bond and long-range CH correlation spectra (HMQC) and by selective INEPT experiments. The resolution and sensitivity of the two techniques are discussed. As a result, the literature assignments for the previously known compounds have been revised.

  • 5.
    Gogoll, Adolf
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Tanner, David
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Complete 1H and 13C NMR spectral assignment of venturicidin A by 2D NMR spectroscopy1989In: Magnetic Resonance in Chemistry, ISSN 0749-1581, E-ISSN 1097-458X, Vol. 27, no 9, p. 863-871Article in journal (Refereed)
    Abstract [en]

    After correlation of the majority of signals by COSY and one-bond heteronuclear correlation, the complete assignment of the 1H and 13C NMR spectra of the macrolide antibiotic venturicidin A required the application of long-range CH coupling information. This was accessible by the COLOC-S and selective INEPT experiments, and the sensitivity of these experiments is discussed. Steric information was obtained from a NOESY spectrum, and the solution structure compared with that in the crystal.

  • 6.
    Kočovský, Pavel
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Pour, Milan
    CZECHOSLOVAK ACAD SCI, INST ORGAN CHEM & BIOCHEM, CS-16610 PRAGUE 6, CZECH REPUBLIC.
    Gogoll, Adolf
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Hanuš, Vladimir
    CZECHOSLOVAK ACAD SCI, J HEYROVSKY INST PHYS CHEM & ELECTROCHEM, CS-18223 PRAGUE 8, CZECH REPUBLIC .
    Smrcina, M.
    CZECHOSLOVAK ACAD SCI, J HEYROVSKY INST PHYS CHEM & ELECTROCHEM, CS-18223 PRAGUE 8, CZECH REPUBLIC .
    Corner Attack on Cyclopropane by Thallium(III) Ions: A Highly Stereospecific Cleavage and Skeletal Rearrangement of 3a,5‑Cyclo‑5a‑cholestan‑6a‑ol1990In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 112, no 18, p. 6735-6737Article in journal (Refereed)
  • 7.
    Nájera, Carmen
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Yus, Miguel
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Karlsson, Ulrika
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Gogoll, Adolf
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Bäckvall, Jan-Erling
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry.
    Nitroselenation of conjugated dienes: Preparation of 3,4-epoxy-3-nitro-1-alkenes1990In: Tetrahedron Letters, ISSN 0040-4039, E-ISSN 1359-8562, Vol. 31, no 29, p. 4199-4202Article in journal (Refereed)
    Abstract [en]

    Conjugated dienes were transformed to synthetically useful 3,4-epoxy-3-nitro-1-alkenes via a nitroselenation-oxidation sequence.

    Conjugated dienes were transformed to synthetically useful 3,4-epoxy-3-nitroalkenes via a nitroselenation-oxidation sequence.

1 - 7 of 7
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