The reactivity of α-azidochalcones has been explored for the preparation of highly substituted oxazoles via a 2H-azirine intermediate. The azidochalcones, when treated with potassium thiocyanate in the presence of potassium persulfate, lead to 2,4,5-trisubstituted oxazoles in good yields. Incidentally, 2-aminothiazoles are the products when ferric nitrate is employed instead of persulfate in the above reaction.

中文翻译：

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通过α-叠氮hal与硫氰酸钾反应获得高度取代的恶唑。

已经探索了通过2 H-叠氮基中间体制备高取代的恶唑的α-叠氮基苯酮的反应性。当在过硫酸钾存在下用硫氰酸钾处理时，叠氮基苯并二恶英以高收率生成2,4,5-三取代的恶唑。顺便提及，当在上述反应中使用硝酸铁代替过硫酸盐时，是2-氨基噻唑的产物。