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Highly enantioselective conjugate addition of fluoromalonates to nitroalkenes using bifunctional organocatalysts
被引:59
作者:
Kwon, Bo Kyung
[1
]
Kim, Sun Mi
[1
]
Kim, Dae Young
[1
]
机构:
[1] Soonchunhyang Univ, Dept Chem, Asan 336745, Chungnam, South Korea
关键词:
Bifunctional organocatalysts;
Michael reaction;
Nitroalkenes;
Asymmetric reactions;
Fluoromalonates;
ASYMMETRIC MICHAEL ADDITION;
ELECTROPHILIC ALPHA-AMINATION;
BETA-KETO-ESTERS;
QUATERNARY STEREOCENTERS;
1,3-DICARBONYL COMPOUNDS;
MEDICINAL CHEMISTRY;
FLUORINATION;
CATALYSIS;
EFFICIENT;
2,4-PENTANDIONE;
D O I:
10.1016/j.jfluchem.2009.06.002
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
The enantioselective conjugate addition of fluoromalonates to aromatic nitroalkenes catalyzed by chiral amine-thiourea bifunctional organocatalysts generated a stereocenter at the carbon bearing the aromatic group and an adjacent prochiral center from the fluoromalonate. Treatment of fluoromalonates with aromatic nitroalkenes under mild reaction conditions afforded the corresponding 2-fluoro-2-(2-nitro-1-arylethyl)malonates with high yields (72-93%) and excellent enantioselectivities (91-98% ee). (C) 2009 Elsevier B.V. All rights reserved.
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页码:759 / 761
页数:3
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