Kinetic resolution of cyclic benzylic azides enabled by site- and enantioselective C(sp(3))-H oxidation.

Kinetic resolution of cyclic benzylic azides enabled by site- and enantioselective C(sp(3))-H oxidation.
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DOI:
10.1038/s41467-022-29319-z
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发表时间:
2022-03-25
影响因子:
16.6
通讯作者:
Liu L
Liu L
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ye P;Feng A;Wang L;Cao M;Zhu R;Liu L

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外消旋体的催化非酶动力学拆分(KR)仍然是制备对映体纯化合物的最有力的工具之一,其主要依赖于反应性官能团的操作。此外,由于叠氮基的尺寸小且不稳定,有机叠氮化物的催化 KR 是一个巨大的挑战。在此,描述了通过位点和对映选择性 C(sp3)-H 氧化实现环状苄基叠氮化物的有效 ​​KR。锰催化的氧化KR反应表现出良好的官能团耐受性,适用于一系列四氢喹啉和二氢吲哚基有机叠氮化物,具有优异的位点和对映异构体辨别能力。计算研究表明,有效的手性识别源自底物和催化剂之间的氢键相互作用。外消旋体的催化动力学拆分是制备对映体纯化合物的最佳方法之一,但由于叠氮基尺寸较小,因此对于有机叠氮化物来说,该过程很困难。在这里,作者展示了通过位点和对映选择性 C(sp3)–H 氧化来动力学拆分环状苄基叠氮化物。
Catalytic nonenzymatic kinetic resolution (KR) of racemates remains one of the most powerful tools to prepare enantiopure compounds, which dominantly relies on the manipulation of reactive functional groups. Moreover, catalytic KR of organic azides represents a formidable challenge due to the small size and instability of the azido group. Here, an effective KR of cyclic benzylic azides through site- and enantioselective C(sp3)–H oxidation is described. The manganese catalyzed oxidative KR reaction exhibits good functional group tolerance, and is applicable to a range of tetrahydroquinoline- and indoline-based organic azides with excellent site- and enantio-discrimination. Computational studies elucidate that the effective chiral recognition is derived from hydrogen bonding interaction between substrate and catalyst. Catalytic kinetic resolution of racemates is among the best ways to prepare enantiopure compounds, but this process is difficult with organic azides given the small size of the azido group. Here, the authors show kinetic resolution of cyclic benzylic azides through site- and enantioselective C(sp3)–H oxidation.
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