Abstract

Hydrogenation/deuteration of carbon chloride (C−Cl) bonds is of high significance but remains a remarkable challenge in synthetic chemistry, especially using safe and inexpensive hydrogen donors. In this article, a visible-light-photocatalytic watersplitting hydrogenation technology (WSHT) is proposed to in-situ generate active H-species (i.e., H_ad) for controllable hydrogenation of aryl chlorides instead of using flammable H₂. When applying heavy water-splitting systems, we could selectively install deuterium at the C−Cl position of aryl chlorides under mild conditions for the sustainable synthesis of high-valued added deuterated chemicals. Sub-micrometer Pd nanosheets (Pd NSs) decorated crystallined polymeric carbon nitrides (CPCN) is developed as the bifunctional photocatalyst, whereas Pd NSs not only serve as a cocatalyst of CPCN to generate and stabilize H (D)-species but also play a significant role in the sequential activation and hydrogenation/deuteration of C−Cl bonds. This article highlights a photocatalytic-WSHT for controllable hydrogenation/deuteration of low-cost aryl chlorides, providing a promising way for the photosynthesis of high-valued added chemicals instead of the hydrogen evolution.

中文翻译：

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可见光光催化水分解策略，用于芳基氯化物的可持续加氢/氘化

摘要

氯化碳（C-Cl）键的加氢/氘化具有很高的意义，但在合成化学中仍然是一个巨大的挑战，特别是使用安全且廉价的氢供体。在本文中，提出了一种可见光光催化水分解加氢技术（WSHT）来原位生成用于控制芳基氯化物氢化的活性H物种（即H _ad），而不是使用易燃的H ₂。当使用重水分解系统时，我们可以在温和的条件下选择性地将氘安装在芳基氯化物的C-Cl位置，以可持续合成高价值的氘代化学品。亚微米级的Pd纳米片（Pd NSs）装饰的结晶聚合碳氮化物（CPCN）被开发为双功能光催化剂，而Pd NSs不仅充当CPCN的助催化剂，以生成和稳定H（D）物种，而且还起着重要的作用。 C-Cl键的顺序活化和加氢/氘化中的作用。本文重点介绍了可控制低成本芳基氯化物加氢/氘代的光催化WSHT，为高附加值化学物质的光合作用提供了一种有前途的方法，而不是产生了氢。