利用可见光/紫外线活化和/或官能化 C-H 键:无金属和光催化剂方法。

IF 7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Jitender Bariwal, Erik Van der Eycken
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引用次数: 0

摘要

植物的光合作用为有机化学中的光化学反应提供了灵感。有机合成化学家在有机反应中总是追求成本效益高、操作简单、避免使用有毒且难以去除的金属催化剂、原子经济、产物纯度高等特点。在过去的几十年里,有机反应中使用光作为催化剂的情况急剧增加,文献中的实例也大量涌现,特别是通过使用有毒且昂贵的金属络合物、光敏剂(如有机染料、高价碘)或使用无机半导体。在本报告中,我们选择了几个有趣的例子,说明在不使用任何金属催化剂或光敏剂的情况下进行的光化学反应。这些实例利用反应物的固有潜力,利用光能引发化学反应。我们的重点是突出反应物中能够吸收光能或在反应过程中形成电子供体-受体(EDA)复合物以引发光化学反应的结构特征。考虑到光化学反应的高度可变性,我们已尽力提供最准确的反应条件。有关光化学反应的简短介绍部分将围绕所讨论的例子展开,并解释光化学反应机制的基本原理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Harnessing Visible/UV Light for the Activation and/or Functionalization of C-H Bonds: Metal- and Photocatalyst-Free Approach.

Photosynthesis in plants has inspired photochemical reactions in organic chemistry. Synthetic organic chemists always seek cost-effective, operationally simple, averting the use of toxic and difficult-to-remove metallic catalysts, atom economical, and high product purity in organic reactions. In the last few decades, the use of light as a catalyst in organic reactions has increased exponentially as literature has exploded with examples, particularly by using toxic and expensive metal complexes, photosensitizers like organic dyes, hypervalent iodine, or by using inorganic semiconductors. In this report, we have selected a few interesting examples of photochemical reactions performed without using any metallic catalyst or photosensitizers. These examples use the inherent potential of reactants to utilize light energy to initiate chemical reactions. Our main emphasis is to highlight the structural features in the reactants that can absorb light energy or form an electron donor-acceptor (EDA) complex during the reaction to initiate the photochemical reaction. Considering the high degree of variability in the photochemical reactions, the utmost care has been taken to present the most accurate reaction conditions. A short introductory section on photochemical reactions will act as an anchor that will revolve around the examples discussed and explain the underlying principle of the photochemical reaction mechanism.

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来源期刊
Chemical record
Chemical record 化学-化学综合
CiteScore
11.00
自引率
3.00%
发文量
188
审稿时长
>12 weeks
期刊介绍: The Chemical Record (TCR) is a "highlights" journal publishing timely and critical overviews of new developments at the cutting edge of chemistry of interest to a wide audience of chemists (2013 journal impact factor: 5.577). The scope of published reviews includes all areas related to physical chemistry, analytical chemistry, inorganic chemistry, organic chemistry, polymer chemistry, materials chemistry, bioorganic chemistry, biochemistry, biotechnology and medicinal chemistry as well as interdisciplinary fields. TCR provides carefully selected highlight papers by leading researchers that introduce the author''s own experimental and theoretical results in a framework designed to establish perspectives with earlier and contemporary work and provide a critical review of the present state of the subject. The articles are intended to present concise evaluations of current trends in chemistry research to help chemists gain useful insights into fields outside their specialization and provide experts with summaries of recent key developments.
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