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
中科院分区:
文献类型:
--
作者:
Jumde RP;Lanza F;Pellegrini T;Harutyunyan SR
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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