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Über Reaktionen mit Betainen, 21. Mitt. Über die Bildung von Formazylverbindungen durch Kupplung von S-Betainen mit 4-Nitrobenzol-diazonium-tetrafluorborat

Reactions with betaines, XXI. On the formation of formazyl compounds by coupling of S-betaines with 4-nitrophenyl-diazonium tetrafluoroborate

  • Organische Chemie Und Biochemie
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Abstract

Dimethylsulfonium acetic acid betaine (1) and thiolanium acetic acid betaine (4) react with 4-nitrophenyldiazonium tetrafluoroborate (2) in aceticacid solution to give the formazyl compounds3 and5. Reaction of dimethylsulfonium- and thiolanium-trifluoroacetyl-methylide (9 and11, resp.) with compound2 leads to the phenylhydrazones10 and13, whereas trimethylammonium-trifluoroacetyl-methylide (14) reacts with formation of the formazane derivative15.

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Authors and Affiliations

  1. Institut für Organische Chemie, Karl-Franzens-Universität Graz, A-8010, Graz, Österreich

    Erich Ziegler & Helga Wittmann

Authors
  1. Erich Ziegler
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  2. Helga Wittmann
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Herrn Prof. Dr. Dr. h. c.K. Kratzl, Universität Wien, mit besten Wünschen zur Vollendung des 70. Lebensjahres gewidmet.

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Ziegler, E., Wittmann, H. Über Reaktionen mit Betainen, 21. Mitt. Über die Bildung von Formazylverbindungen durch Kupplung von S-Betainen mit 4-Nitrobenzol-diazonium-tetrafluorborat. Monatsh Chem 117, 653–659 (1986). https://doi.org/10.1007/BF00817902

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  • DOI: https://doi.org/10.1007/BF00817902

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