tert-butyl 3-(2-(tert-butoxy)-2-oxoethylidene)-2-oxoindoline-1-carboxylate 、
3-(phenylimino)pentane-2,4-dione 在
3-((3,5-bis(trifluoromethyl)benzyl)amino)-4-(((S)-(6-methoxyquinolin-4-yl)((1S,2S,4S,5R)-5-vinylquinuclidin-2-yl)methyl)amino)cyclobut-3-ene-1,2-dione 作用下,
以
氯仿 为溶剂,
反应 48.0h,
以78%的产率得到ditert-butyl (1R,2R,3R)-3-acetyl-3-anilino-2',4-dioxospiro[cyclopentane-2,3'-indole]-1,1'-dicarboxylate