Organocatalyzed enantioselective synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylates.
Organocatalyzed enantioselective synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylates.
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DOI:
10.1016/j.tetlet.2011.10.040
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发表时间:
2011-12-14
影响因子:
1.8
通讯作者:
Zhao, Cong-Gui
中科院分区:
文献类型:
--
作者:
Ramireddy, Naresh;Abbaraju, Santhi;Zhao, Cong-Gui
The organocatalyzed enantioselective synthesis of biologically active 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate derivatives was achieved using bifunctional cinchona alkaloids as the catalysts. Using quinine thiourea as the catalyst, the tandem Michael addition-cyclization reaction between 1,3-cyclohexanediones and alkylidenecyanoacetate derivatives gives the desired products in high yields (up to 92%) and good ee values (up to 82%).
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影响因子:
1.8
作者:
Gogoi, Sanjib;Zhao, Cong-Gui
通讯作者:
Zhao, Cong-Gui
影响因子:
5.2
作者:
Dudding, T;Hafez, AM;Lectka, T
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Lectka, T
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作者:
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影响因子:
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作者:
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通讯作者:
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