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NEW OXAZOLE TO OXAZOLE RECYCLIZATION

Oleh V. Shablykin, Danylo О. Merzhyievskyi, Volodymyr S. Brovarets, Svitlana V. Shishkina
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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.

Keywords


5-aminooxazole-4-carbonitrile; 5-aminooxazole-4-carboxamide; oxazolo[5,4-d]pyrimidin-7(6H)-one; trifluoroacetic acid; recyclization.

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Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv