文献类型： 外文期刊
作者： Liu, Zhijing 1 ; Ma, Zhiwei 1 ; Wang, Chuanchuan 1 ; Ding, Degang 1 ; Liu, Juntao 1 ; Chen, Xiaopei 1 ; Geng, Guangwei 1 ;
作者机构： 1.Henan Univ Anim Husb & Econ, Fac Sci, Zhengzhou 450046, Peoples R China
2.Henan Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Henan Cereal Qual & Safety Testing Key Lab, Zhengzhou 450002, Peoples R China
关键词： Coumarin derivatives; Michael addition; organocatalysis; squaramides; beta,gamma-unsaturated; alpha-ketoesters; 4-hydroxycoumarin
期刊名称：LETTERS IN ORGANIC CHEMISTRY （ 影响因子：0.797； 五年影响因子：0.758 ）
ISSN： 1570-1786
年卷期： 2022 年 19 卷 11 期
页码：
收录情况： SCI
摘要： A newly chiral tertiary amine-squaramide has successfully developed and applied into the asymmetric Michael addition of 4-hydroxycoumarin to beta,gamma-unsaturated alpha-ketoesters. The catalyst system performed well with a low catalyst loading of 1 mol% under mild reaction conditions. A series of coumarin derivatives were obtained with good yields and enantioselectivities.
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