Catalytic Enantioselective Electrophilic Aminations of Acyclic α-Alkyl β-Carbonyl Nucleophilies.
Catalytic Enantioselective Electrophilic Aminations of Acyclic α-Alkyl β-Carbonyl Nucleophilies.
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DOI:
10.1055/s-0029-1217334
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发表时间:
2009-06
期刊:
影响因子:
--
通讯作者:
Deng L
中科院分区:
文献类型:
--
作者:
Liu X;Sun B;Deng L
Highly enantioselective aminations of acyclic α-alkyl β-keto thioesters and trifluoroethyl α-methyl α-cyanoacetate (12) with as low as 0.05 mol % of a bifunctional cinchona alkaloid catalyst were established. This ability to afford highly enantioselectivity for the amination of α-alkyl β-carbonyl compounds renders the 6′-OH cinchona alkaloid-catalyzed amination applicable for the enantioselective synthesis of acyclic chiral compounds bearing N-substituted quaternary stereocenters. The synthetic application of this reaction is illustrated in a concise asymmetric synthesis of α-methylserine, a key intermediate previously utilized in the total synthesis of a small molecule immunomodulator, conagenin.
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影响因子:
1.8
作者:
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通讯作者:
Shibasaki, M
影响因子:
15
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影响因子:
15
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影响因子:
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通讯作者:
Shibasaki, Masakatsu
影响因子:
16.6
作者:
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通讯作者:
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