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NMR-spektroskopische Untersuchungen zurE/Z-Isomerie von substituierten Dithiocarbazinsäurederivaten

NMR-spectroscopic investigation ofE/Z-isomerism in substituted dithiocarbacinic acid derivatives

  • Organische Chemie Und Biochemie
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Summary

NMR-spectroscopic investigations of substituted dithiocarbacinic acid derivatives show the existence of configurational isomers relative to the C=N double bond, but no tautomerism. We applied chemical shift differences in the1H-,13C- and15N-NMR-spectra, N - H and C - H coupling constants and NOE difference measurements in the solvents CDCl3,DMSO-d 6 and partly CD3OD in order to discriminate between the isomers and to determine the configurational composition. Compounds4 and5 exist asE-isomers in all solvents, compounds1, 2 and3 as a mixture ofE/Z-isomers. InDMSO-d 6 theE-form is the preferred isomer.

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Authors and Affiliations

  1. Sektion Chemie, Karl-Marx-Universität Leipzig, D-O-7010, Leipzig, Bundesrepublik Deutschland

    Uwe Himmelreich, Reiner Häßner, Philip Thomas, Frank Tschwatschal & Rolf Borsdorf

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  1. Uwe Himmelreich
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  2. Reiner Häßner
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  3. Philip Thomas
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  4. Frank Tschwatschal
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  5. Rolf Borsdorf
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Himmelreich, U., Häßner, R., Thomas, P. et al. NMR-spektroskopische Untersuchungen zurE/Z-Isomerie von substituierten Dithiocarbazinsäurederivaten. Monatsh Chem 121, 923–930 (1990). https://doi.org/10.1007/BF00808956

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  • DOI: https://doi.org/10.1007/BF00808956

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