tert-butyl 3-(2-(tert-butoxy)-2-oxoethylidene)-2-oxoindoline-1-carboxylate 、 2-tosylaminochalcone 在
(S)-1-(3,5-bis(trifluoromethyl)phenyl)-3-(3,3-dimethyl-1-(piperidin-1-yl)butan-2-yl)thiourea 作用下,
以
甲苯 为溶剂,
反应 24.0h,
以90%的产率得到di-tert-butyl (2'S,3R,4'R)-2-oxo-4'-(2-oxo-2-phenylethyl)-1'-tosyl-1',4'-dihydro-2'H-spiro[indoline-3,3'-quinoline]-1,2'-dicarboxylate