当前位置: X-MOL 学术ACS Omega › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis of 2,3-Dialkylated Tartaric Acid Esters via Visible Light Photoredox-Catalyzed Reductive Dimerization of α-Ketoesters
ACS Omega ( IF 3.7 ) Pub Date : 2017-08-18 00:00:00 , DOI: 10.1021/acsomega.7b00749
Jing Zhu 1 , Yi Yuan 1 , Shaozhong Wang 1 , Zhu-Jun Yao 1
Affiliation  

A mild transition-metal-free protocol to prepare 2,3-dialkylated tartaric acid esters has been developed by taking advantage of a visible light photoredox-catalyzed reductive dimerization of α-ketoesters with a combination of an organic dye photocatalyst and a Hantzsch-type 1,4-dihydropyridine hydrogen donor. A broad range of functional groups including cyclopropane, alkene, alkyne, 4-methoxybenzyl ether, acetal, silyl ether, carbamate, cyclic ether, cyclic thioether, bromoalkane, and N-alkoxyphthalimide are well-compatible. By employing the visible light photoredox-catalyzed reductive coupling and the subsequent optical resolution, both enantioenriched diastereomers of 2,3-dialkylated tartaric acid could be acquired conveniently.

中文翻译:

可见光光氧化还原催化 α-酮酯还原二聚合成 2,3-二烷基酒石酸酯

通过利用 α-酮酯的可见光光氧化还原催化还原二聚反应,并结合有机染料光催化剂和 Hantzsch 型,开发了一种温和的无过渡金属制备 2,3-二烷基化酒石酸酯的方案1,4-二氢吡啶氢供体。广泛的官能团,包括环丙烷、烯烃、炔烃、4-甲氧基苄基醚、缩醛、甲硅烷基醚、氨基甲酸酯、环醚、环硫醚、溴代烷烃和N-烷氧基邻苯二甲酰亚胺,具有良好的相容。通过采用可见光光氧化还原催化的还原偶联和随后的光学拆分,可以方便地获得 2,3-二烷基化酒石酸的两种对映体富集的非对映体。
更新日期:2017-08-18
down
wechat
bug