Heterogeneous photoredox flow chemistry for the scalable organosynthesis of fine chemicals

Heterogeneous photoredox flow chemistry for the scalable organosynthesis of fine chemicals
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用于精细化学品可扩展有机合成的非均相光氧化还原流化学

DOI:
10.1038/s41467-020-14983-w
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发表时间:
2020-03
影响因子:
16.6
通讯作者:
Wang Xinchen
Wang Xinchen
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Yang Can;Li Run;Zhang Kai A. I.;Lin Wei;L;fester Katharina;Wang Xinchen

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在温和条件下大规模光化学合成高价值化学品是绿色化工生产的理想方法。然而,由于制备成本高昂、光敏剂稳定性低以及经典光催化剂所需的关键反应条件,可扩展的光催化过程几乎没有报道。在这里,我们报告了流动化学与多相光氧化还原催化的结合,可以在室温空气中的可见光连续流动反应器中轻松生产高价值化合物。在流动反应器系统中,聚合碳氮化物是一种廉价、可持续且稳定的多相光催化剂,被固定在玻璃珠和纤维上,展示了光催化材料装置的高度灵活的构建可能性。作为高价值化学品生产的一个例子,重要的化学结构(如环丁烷)是许多药物化合物(如木兰素)的基本组成部分,可以在流程中合成,具有高催化效率和稳定性。
Large-scale photochemical synthesis of high value chemicals under mild conditions is an ideal method of green chemical production. However, a scalable photocatalytic process has been barely reported due to the costly preparation, low stability of photosensitizers and critical reaction conditions required for classical photocatalysts. Here, we report the merging of flow chemistry with heterogeneous photoredox catalysis for the facile production of high value compounds in a continuous flow reactor with visible light at room temperature in air. In the flow reactor system, polymeric carbon nitrides, which are cheap, sustainable and stable heterogeneous photocatalysts, are immobilized onto glass beads and fibers, demonstrating a highly flexible construction possibility for devices of the photocatalytic materials. As an example of the production of high value chemicals, important chemical structures such as cyclobutanes, which are basic building blocks for many pharmaceutical compounds, like magnosalin, are synthesized in flow with high catalytic efficiency and stability.
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