1-甲基靛红 、
(4Z)-4-[[4-(dimethylamino)phenyl]methylidene]-1-phenylpyrazolidine-3,5-dione 、
L-脯氨酸 以
甲醇 为溶剂,
反应 14.0h,
以70%的产率得到(2'RS,4'RS,4'aSR)-4'-(p-(dimethylamino)phenyl)-1''-methyl-1-phenyldispiro[pyrazolidine-4,3'-pyrrolizidine-2',3''-indoline]-2'',3,5-trione