Sustainable photocatalytic synthesis of 2-hydroxybenzofuran-3(2H)-ones using lead-free Cs2AgBiBr6 nanocrystals†

IF 9.3 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Green Chemistry Pub Date : 2024-09-07 DOI:10.1039/d4gc03834g

Haibo Zhu , Ting Zhong , Liu Yang , Yajing Shen , Qiangwen Fan , Zhanggao Le , Zongbo Xie

引用次数: 0

Abstract

The photocatalytic activation of oxygen molecules (O₂) is an environmentally friendly and sustainable alternative to substituted benzofuran-3(2H)-one synthesis. Herein, lead-free Cs₂AgBiBr₆ nanocrystals were used to activate O₂ efficiently and selectively for the photocatalytic transformation of 4-hydroxycoumarins to functional 2-hydroxy-benzofuran-3(2H)-ones under an air atmosphere. Polyfunctionalized benzofuran-3(2H)-ones with a quaternary carbon center can be selectively obtained in moderate to good yields at room temperature via one-pot synthesis. Perovskite crystal structures have significant influence on photocatalytic activity due to the different charge separation abilities. The reaction mechanism was further investigated to confirm the contribution of reactive oxygen species (ROS).

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使用无铅 Cs2AgBiBr6 纳米晶体可持续光催化合成 2-羟基苯并呋喃-3(2H)-酮†。

氧分子（O2）的光催化活化是取代苯并呋喃-3(2H)-酮合成的一种环境友好且可持续的替代方法。本文利用无铅 Cs2AgBiBr6 纳米晶体高效、选择性地激活 O2，在空气环境下将 4- 羟基香豆素光催化转化为功能性 2- 羟基苯并呋喃-3(2H)-酮。通过一锅合成法，可在室温下选择性地获得具有季碳中心的多官能化苯并呋喃-3(2H)-酮，产率为中等到良好。由于电荷分离能力不同，透镜晶体结构对光催化活性有显著影响。对反应机理的进一步研究证实了活性氧（ROS）的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Green Chemistry 化学-化学综合

CiteScore

16.10

自引率

7.10%

发文量

677

审稿时长

1.4 months

期刊介绍： Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.