A Novel, One-Pot, Efficient
Synthesis of 2-Aroyl-1,4-diaryl-7,9-dimethyl-7,9-diazaspiro[4.5]deca-1,3-diene-6,8,10-triones
作者:Mehdi Adib、Mohammad Sayahi、Hakimeh Ziyadi、Long-Guan Zhu、Hamid Bijanzadeh
DOI:10.1055/s-0028-1083157
日期:——
A novel and efficient synthesis of 2-aroyl-1,4-diaryl-7,9-dimethyl-7,9-diazaspiro[4.5]deca-1,3-diene-6,8,10-triones is described. The reactive 1:1 zwitterionic intermediate, formed by the addition of triphenylphosphine to diaroylacetylenes, was trapped by a Knoevenagel condensation product prepared in situ by reaction of N,N-dimethylbarbituric acid and aromatic aldehydes, to afford the title compounds in excellent yields under mild reaction conditions.
本文描述了一种新颖且高效的合成2-aroyl-1,4-diaryl-7,9-dimethyl-7,9-diazaspiro[4.5]deca-1,3-diene-6,8,10-triones的方法。通过三苯基膦与二芳酰炔的加成反应生成的反应性1:1两性离子中间体,被在原位通过N,N-二甲基巴比妥酸与芳香醛反应制备的Knoevenagel缩合产物捕获,从而以优异产率在温和的反应条件下获得了目标化合物。