Highly selective synthesis of a new antipyrine-substituted tetracycle was implemented on the basis of a modified Mannich reaction as a result of the condensation of glycoluril with 4-aminoantipyrine in formalin without the use of catalysts.

中文翻译：

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具有高应用潜力的新型甘脲基杂化化合物的选择性合成

在不使用催化剂的情况下，甘脲与 4-氨基安替比林在福尔马林中缩合，在改进的曼尼希反应的基础上实现了新的安替比林取代四环的高选择性合成。