As a continuation of our previous work about the synthesis and properties of thiazolopyrimidines, which are expected to be of biological and medicinal importance, the present work is aimed to synthesize new polyfunctional substituted thiazolo[3,2-a]pyrimidines. Pyrimidine derivatives I were reacted with bromomalononitrile or ethyl bromocyanoacetate at room temperature in ethanol in presence of potassium hydroxide as a basic catalyst followed by refluxing the reaction mixture to give thiazolo[3,2-a]pyrimidines IIa-IId.
作为我们之前关于噻唑吡嘧啶的合成和性质的工作的延续,这些化合物被认为具有生物和药用重要性,本研究旨在合成新的多官能基取代的噻唑并[3,2-a]吡嘧啶。在乙醇中,将吡嘧啶衍生物I与溴丙二腈或溴氰乙酸乙酯在室温下在钾氢氧化物存在下反应,然后回流反应混合物,得到噻唑并[3,2-a]吡嘧啶IIa-IId。