在三乙胺催化下,α-肉桂酰基烯酮二苄硫缩醛与乙二胺反应形成α-羰基-N,N-缩烯酮类化合物,其进一步发生分子内迈克尔加成反应,以中等产率合成了3个新型的取代四氢咪唑并[1,2-a]吡啶酮类化合物,其结构经1H NMR和IR表征。对反应机理进行了初步探讨。 Under triethylamine catalysis, α-cinnamoyl ketene dibenzylthioacetal reacts with ethylenediamine to form α-carbonyl-N, N-keto ketene compounds, which undergo further intramolecular Michael addition reactions to moderate Three new substituted tetrahydroimidazo [1,2-a] pyridinones were synthesized in a high yield and their structures were characterized by 1H NMR and IR. The reaction mechanism was discussed.