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Three-Component Functionalized Dihydropyridine Synthesis via a Formal Inverse Electron-Demand Hetero-Diels-Alder Reaction
被引:39
|作者:
Yan, Xiaonan
[1
]
Ling, Fei
[1
]
Zhang, Yuchen
[1
]
Ma, Cheng
[1
]
机构:
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
基金:
中国国家自然科学基金;
关键词:
ONE-POT SYNTHESIS;
SULFONYL AZIDE;
LEWIS-ACID;
CYCLOADDITION REACTIONS;
YNAMIDES;
DERIVATIVES;
KETENIMINE;
ALKYNES;
1,4-DIHYDROPYRIDINES;
1,2-DIAZINES;
D O I:
10.1021/acs.orglett.5b01622
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A mild three-component synthetic approach to versatile 2-amino-1,4-dihydropyridines from terminal alkynes, sulfonyl azides, and N-sulfonyl-1-aza-1,3-butadienes was successfully developed and relied on the in situ generation of metalated ynamide intermediates Ib to achieve a formal inverse electron-demand hetero-Diels-Alder reaction. Experimental results suggest that alkali Metal cations (Li+ and Cs+ ions) might play a critical role to achieve the cycloaddition process.
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页码:3536 / 3539
页数:4
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