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A Chiral Secondary Amine-Amidophosphane Precatalyst for Silver-Catalyzed Asymmetric 1,3-Dipolar Cycloaddition Reactions
被引:4
作者:
Zheng, Xiaojun
[1
]
Deng, Qifu
[1
]
Hou, Qinglin
[1
]
Zhang, Kaiqiang
[1
]
Wen, Pushan
[1
]
Hu, Shunqin
[1
]
Wang, Haifei
[1
]
机构:
[1] Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China
来源:
SYNTHESIS-STUTTGART
|
2018年
/
50卷
/
12期
关键词:
secondary amine;
amidophosphanes;
silver carbonate;
1;
3-dipolar cycloaddition;
pyrrolidines;
AZOMETHINE YLIDES;
COOPERATIVE CATALYSIS;
CALCIUM COMPLEXES;
IMINO ESTERS;
ACID;
DIPOLAROPHILES;
PYRROLIDINES;
DERIVATIVES;
PYRROLIZIDINES;
CONSTRUCTION;
D O I:
10.1055/s-0037-1609492
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A class of multifunctional amidophosphanes derived from chiral 1,2-diphenylethylenediamines and natural -amino acids has been developed. Among these, in combination with silver(I) salts, a chiral secondary amine-amidophosphane precatalyst has been demonstrated as being a highly efficient multifunctional precatalyst in the asymmetric 1,3-dipolar cycloaddition of azomethine ylides, including a series of heterocyclic, aliphatic, and 2-substituted azomethine ylides, and aromatic ,-unsaturated aldehyde derived imino esters with different electron-deficient alkenes, as well as the three-component reaction of -imino esters generated in situ by using N , N -diisopropylcarbodiimide as dehydrating agent. Under optimal conditions, highly functionalized endo -adducts were obtained in high to excellent yields (up to 99% yield) and enantioselectivities (up to >99.9% ee).
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页码:2347 / 2358
页数:12
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