(S,S)-Diphenylethylenediamine-derived bis(imidazolidine)pyridine (PyBidine)–Ni(OAc)2 complex catalyzed the asymmetric Michael/aldol reaction of methyleneindolinone and thiosalicylaldehyde to produce (2′R,3S,4′R)-thiochromanyl-spirooxindole having three contiguous stereogenic centers.
                                    (小号,小号)-Diphenylethylenediamine衍生的双(
咪唑)
吡啶(PyBidine)-Ni(OAC)2络合物催化不对称迈克尔加成/ methyleneindolinone和thiosalicylaldehyde的醛醇缩合反应以制备(2' - [R,3小号,4' - [R )-具有三个连续的立体异构中心的
硫代苯并二氢
吡喃恶螺。