A Facile Regioselective 1,3-Dipolar Cycloaddition Reaction for the Synthesis of Dispiro[Indole-3,2-Pyrrolidine-3′,5″-[1,3]Thiazolidine] Derivatives
作者:Guo-Liang Feng、Yue Li、Li-Jun Geng
DOI:10.3184/174751915x14231323398218
日期:2015.4
The 1,3-dipolar cycloadditionreaction of azomethine ylides generated in situ from isatin and sarcosine with 5-arylmethylene-3-phenyl-2-thioxothiazolidin-4-one in refluxing toluene produced the 2″-thioxodispiro[indole-3,2′-pyrrolidine-3′,5″-[1,3]thiazolidine]-2,4″-dione derivatives in good yields (80–88%). The structures were assigned by 1H NMR, IR, elementary analysis and single crystal X-ray diffraction
由靛红和肌氨酸原位生成的偶氮甲碱叶立德与 5-芳基亚甲基-3-苯基-2-硫代噻唑烷-4-酮在回流甲苯中的 1,3-偶极环加成反应生成 2"-thioxodispiro[indole-3,2' -吡咯烷-3',5"-[1,3]噻唑烷]-2,4"-二酮衍生物,产率良好(80-88%)。通过 1H NMR、IR、元素分析和单晶 X 射线衍射分析确定结构,发现环加成反应具有高度的区域和立体选择性。