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Synthesis of β-Aminonitrones by Regioselective Oxidation of 4H-Imidazoles

✍ Scribed by Jens Atzrodt; Rainer Beckert; Helmar Görls

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 62 KB
Volume: 342
Category: Article
ISSN: 1615-4150
DOI: 10.1002/(sici)1521-3897(200003)342:3<245::aid-prac245>3.0.co;2-o

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✦ Synopsis

A new regioselective synthesis for aminonitrones of type 4 via oxidative modification of 4H-imidazoles 1 has been developed. An X-ray structural analysis revealed an unexpected tautomeric fixation of the hydrogen atom in 4. NMR investigations of the 15 N-labelled derivative 4b showed that this fixation is also present in solution. All new synthe-

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