Chemie polyfunktioneller Moleküle, 126 Mitt. Synthese, Struktur und Tautomerie von 5-Fluor-N(1), N(3)-bis(diphenylphosphanyl)-uracil |
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| Authors: | J Ellermann J Schamberger F A Knoch M Moll W Bauer |
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| Institution: | (1) Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, D-91058 Erlangen, Deutschland;(2) Institut für Organische Chemie, Universität Erlangen-Nürnberg, D-91054 Erlangen, Deutschland |
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| Abstract: | Summary 5-Fluoro-uracil (1) reacts with chloro-diphenylphosphane to 5-fluoro-N(1), N(3)-bis(diphenylphosphanyl)uracil (3) which was characterized by X-ray crystallography, IR, and mass spectra.19F,31P{1H},13C{1H}, and1H NMR spectra indicate that3 rearranges inTHF solution to some extent to the tautomeric 5-fluoro-O(2), O(4)-bis(diphenylphosphanyl)uracil (4). If the solvent contains traces of water, Ph2P(O)-PPh2 (6) and uracil derivatives are formed by hydrolysis.Herrn Professor Dr.Walter Siebert zum 60. Geburtstag gewidmet. |
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| Keywords: | Diphenylphosphanyl substituted 5-fluoro-uracils X-ray structure determination Tautomerism NMR Vibrational and mass spectra |
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