作者:Vinokurov、Iliyasov、Karpenko、Valeev、Fakhrutdinov、Elinson、Vereshchagin
DOI:10.1007/s11172-024-4242-6
日期:——
The present study describes a multicomponent synthesis of pyridinium derivatives of piperidin-2-ones from aromatic aldehydes, malononitriles, pyridines, haloacetates, and ammonium acetate. The synthesis occurs through the in situ formation of pyridinium ylide and involves the Knoevenagel—Michael—Mannich cyclization cascade. 1-[(3RS,4SR,6RS)-4,6-Diaryl-5,5-dicyano-2-oxopiperidin-3-yl]pyridin-1-ium halides
本研究描述了从芳香醛、丙二腈、吡啶、卤代乙酸酯和乙酸铵中多组分合成哌啶-2-酮的吡啶鎓衍生物。该合成通过吡啶鎓叶立德的原位形成进行,并涉及 Knoevenagel-Michael-Mannich 环化级联。 1-[(3RS,4SR,6RS)-4,6-二芳基-5,5-二氰基-2-氧代哌啶-3-基]吡啶-1-鎓卤化物,具有三个立体中心和 1-[(3RS,4SR,5SR合成了具有四个立构中心的[,6RS)-5-烷氧基羰基-4,6-二芳基-5-氰基-2-氧代哌啶-3-基]吡啶-1-鎓卤化物。