作者:Xu, Wen-Feng、Xiao, Ren-Xu、Lv, Shuo、Li, Xing-Yue、Lan, Ming-Xing、Mou, Xue-Qing、Zhang, Yun、Chen, Yong-Zheng、Cui, Bao-Dong
DOI:10.1021/acs.orglett.4c02631
日期:——
A facile copper-catalyzed [3 + 2] cycloaddition of N-2,2,2-trifluoroethylisatin ketimines with various electron-deficient alkenes to access structurally polyfunctionalized spiro-pyrrolidine–oxindole motifs has been developed. Under the catalytic system, the N-2,2,2-trifluoroethylisatin ketimines could be utilized to react with a series of exocyclic alkenes, including 2-acylamino acrylates, 3-methylene-β-lactams
已经开发出一种简单的铜催化的N -2,2,2-三氟乙基靛酮亚胺与各种缺电子烯烃的 [3 + 2] 环加成反应,以获得结构上多官能化的螺吡咯烷-羟吲哚基序。在催化体系下, N -2,2,2-三氟乙基靛酮亚胺可与一系列环外烯烃反应,包括2-酰氨基丙烯酸酯、3-亚甲基-β-内酰胺以及以环丁烯酮为代表的位阻环烯烃,获得各种分别带有α-氨基酸酯、β-内酰胺和环丁酮的密集官能化螺环吡咯烷骨架,收率普遍良好,具有优异的非对映选择性和对映选择性。