Three-component condensation of pyruvic acid with aromatic aldehydes and some aminoazoles was developed as a procedure for the synthesis 5-aryl-5,8-dihydroazolo[1,5-a]pyrimidine-7-carboxylic acids. An influence of solvent type on the composition of the reaction products was found. The structures of the compounds obtained were proved by 1H and 13C NMR spectroscopy, NOE experiments, and X-ray analysis.
开发了丙酮酸与芳香醛和一些氨基唑的三组分缩合反应,作为合成 5-芳基-5,8-二氢唑并[1,5-a]嘧啶-7-羧酸的程序。研究发现了溶剂类型对反应产物组成的影响。1H 和 13C NMR 光谱、NOE 实验和 X 射线分析证明了所获化合物的结构。