1,3-Dipolar cycloaddition approach to novel dispiro[pyrazolidine-4,3′-pyrrolizidine-2′,3″-indoline]-2″,3,5-triones
作者:Essam M. Hussein、Saleh A. Ahmed、Nizar El Guesmi、Khalid S. Khairou
DOI:10.3184/174751917x14951017434315
日期:2017.6
non-stabilised azomethine ylides derived from isatins and L-proline, in a variety of different solvents, to (Z)-4-arylidene-1-phenylpyrazolidine-3,5-diones as dipolarophiles afforded a series of novel dispiro[pyrazolidine-4,3′-pyrrolizidine-2′,3″-indoline]-2″,3,5-triones regioselectively and in good yields.
在各种不同的溶剂中,来自靛红和 L-脯氨酸的非稳定偶氮甲碱叶立德的简单方便的 1,3-偶极环加成反应为 (Z)-4-亚芳基-1-苯基吡唑烷-3,5-二酮作为dipolarophiles 以区域选择性和良好的产率提供了一系列新型的二螺[pyrazolidine-4,3'-pyrrolizidine-2',3"-indoline]-2",3,5-triones。