Ni(II)-Catalyzed Asymmetric Nitration of Oxindoles: Construction of Cipargamin Analogues
Ni(II)-Catalyzed Asymmetric Nitration of Oxindoles: Construction of Cipargamin Analogues
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Ni(II) 催化的羟吲哚不对称硝化:西帕加明类似物的构建
DOI:
10.1021/acscatal.1c04460
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发表时间:
2021-11
期刊:
影响因子:
12.9
通讯作者:
Xiaoxun Li
中科院分区:
文献类型:
--
作者:
Mingjun Lv;Xiaoxun Li
The efficient stereoselective nitration ofsp3carbons, especially in an asymmetric manner, remains a formidable challenge. Here we report an example of nickel-catalyzed asymmetric nitration reaction, delivering chiral oxindoles bearing a tertiary nitro group in good yields with high enantioselectivities (up to 83% yield and 95% ee). Diverse enantioenriched 3-nitro oxindoles were prepared from readily available oxindoles efficiently, benefiting the synthesis of chiral 3-amino oxindoles. Notably, the synthetic potential of this asymmetric nitration method was further demonstrated by constructing analogues of Cipargamin, a potent antimalarial agent. Preliminary mechanistic studies supported a radical process involved in this transformation.
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DOI:
10.1126/science.1193225
发表时间:
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期刊:
Science (New York, N.Y.)
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12.9
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DOI:
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发表时间:
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期刊:
J. Org. Chem.
影响因子:
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