Proline-based Amino Pyridine Dipeptides as Efficient Organocatalysts for Direct Aldol Reaction

被引:0
|
作者
Gao Jun-long [1 ]
Zheng Liang-yu [2 ]
Zhang Suo-qin [1 ]
Zhang Xin-min [1 ]
Sun Guo-dong [1 ]
Qin Lin [1 ]
Li Yao-xian [1 ]
Liu Qing-wen [1 ]
Li Xiao-bo [1 ]
机构
[1] Jilin Univ, Coll Chem, Changchun 130021, Peoples R China
[2] Jilin Univ, Key Lab Mol Enzymol & Engn, Minist Educ, Changchun 130021, Peoples R China
基金
中国国家自然科学基金;
关键词
Proline-based dipeptide; Aldol reaction; Enantioselectivity; ASYMMETRIC ALDOL; ENAMINE CATALYSIS; ALDEHYDES; ACID; DIETHYLZINC; STRATEGY; KETONES; DESIGN;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of proline-based amino pyridine dipeptide organocatalysts was synthesized and applied in direct asymmetric intermolecular aldol reaction. These catalysts showed good solubility in organic solvents, good yields (73%-97%) and enantioselectivitives(74%-94%). Among them, dipeptide organocatalyst(2) was found to be the most efficient one for the asymmetric aldol reaction between cyclohexanone and 4-nitrobeznaldehyde. After optimizing the catalytic reaction conditions, we found that the catalyst showed high yield(97%), enantioselectivity(e.e., up to 92%) and anti-diastereoselectivity(up to 95:5) at mild room temperature without any additives.
引用
收藏
页码:50 / 54
页数:5
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