Highly enantioselective catalytic synthesis of chiral pyridines.

Highly enantioselective catalytic synthesis of chiral pyridines.
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DOI:
10.1038/s41467-017-01966-7
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发表时间:
2017-12-12
影响因子:
16.6
通讯作者:
Harutyunyan SR
Harutyunyan SR
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Jumde RP;Lanza F;Pellegrini T;Harutyunyan SR

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由于手性吡啶衍生物在药物化学中的重要性,制备手性吡啶衍生物的一般方法受到极大的关注。在这里,我们报道了反应性差的β-取代烯基吡啶的高对映选择性催化转化,以获得广泛的烷基化手性吡啶。简单的方法包括通过刘易斯酸(LA)活化,使用容易获得的和高反应性的格氏试剂,和铜-手性二膦配体催化剂的反应性增强。除了允许在烯基吡啶的β-位引入不同的直链、支链、环状和官能化的烷基链之外,该催化体系还显示出高的官能团耐受性。手性吡啶类化合物在药物化学中具有重要的应用价值。本文报道了铜催化的刘易斯酸辅助的β-取代烯基吡啶与格氏试剂的不对称烷基化反应,得到了具有良好对映选择性的手性吡啶类化合物。
General methods to prepare chiral pyridine derivatives are greatly sought after due to their significance in medicinal chemistry. Here, we report highly enantioselective catalytic transformations of poorly reactive β-substituted alkenyl pyridines to access a wide range of alkylated chiral pyridines. The simple methodology involves reactivity enhancement via Lewis acid (LA) activation, the use of readily available and highly reactive Grignard reagents, and a copper-chiral diphosphine ligand catalyst. Apart from allowing the introduction of different linear, branched, cyclic, and functionalised alkyl chains at the β-position of alkenyl pyridines, the catalytic system also shows high functional group tolerance. Chiral pyridines are valuable building blocks in medicinal chemistry applications. Here, the authors report the copper-catalysed Lewis acid-assisted asymmetric alkylation of β-substituted alkenyl pyridines with Grignard reagents affording chiral pyridines with excellent enantioselectivity.
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