Diastereoselectivity-Switchable Gold-Catalyzed Formal [3+2]-Cycloadditions of N-2,2,2-Trifluoroethylisatin Ketimines with Yne-Enones

被引:6
|
作者
Xiao, Jun-An [1 ]
Cheng, Xiu-Liang [1 ]
Peng, Hai [1 ]
Liang, Jin-Shao [1 ]
Luo, Xiao-Yan [1 ]
Su, Wei [1 ]
机构
[1] Nanning Normal Univ, Guangxi Key Lab Nat Polymer Chem & Phys, Nanning 530001, Guangxi, Peoples R China
基金
中国国家自然科学基金;
关键词
gold catalysis; 3+2]-cycloaddtion; spirooxindole; yne-enone; catalyst-controlled; ENANTIOSELECTIVE SYNTHESIS; 1,3-DIPOLAR CYCLOADDITION; TANDEM; 2-(1-ALKYNYL)-2-ALKEN-1-ONES; HETEROCYCLIZATION; ACCESS; DIASTEREO;
D O I
10.1002/asia.202100591
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The unexpected gold-catalyzed formal [3+2]-cycloaddition of N-2,2,2-trifluoroethylisatin ketimines with 2-(1-Alkynyl)-2-alken-1-ones is reported. Both diastereomers of the corresponding cycloadducts were formed in moderate to excellent yields with excellent diastereoselectivities by switching the catalytic system from mono-gold to gold/silver bimetallic catalytic system. The practicality of this protocol is demonstrated by scale-up reaction and the transformations of the cycloadduct.
引用
收藏
页码:2435 / 2438
页数:4
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