New oxazole to oxazole recyclization.

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    • Abstract:
      (4-Cyanooxazol-5-ylamino)acetates and (4-cyanooxazol-5-ylamino)acetamides after treatment with trifluoroacetic acid undergo recyclization to the mixture of corresponding 5-aminooxazoles, 5-trifluoroacetylaminooxazoles, and oxazolopyrimidinones. The structures have been confirmed for certain products which have been isolated in pure form. [ABSTRACT FROM AUTHOR]
    • Abstract:
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