Haibo Zhu , Ting Zhong , Liu Yang , Yajing Shen , Qiangwen Fan , Zhanggao Le , Zongbo Xie
{"title":"Sustainable photocatalytic synthesis of 2-hydroxybenzofuran-3(2H)-ones using lead-free Cs2AgBiBr6 nanocrystals†","authors":"Haibo Zhu , Ting Zhong , Liu Yang , Yajing Shen , Qiangwen Fan , Zhanggao Le , Zongbo Xie","doi":"10.1039/d4gc03834g","DOIUrl":null,"url":null,"abstract":"<div><div>The photocatalytic activation of oxygen molecules (O<sub>2</sub>) is an environmentally friendly and sustainable alternative to substituted benzofuran-3(2<em>H</em>)-one synthesis. Herein, lead-free Cs<sub>2</sub>AgBiBr<sub>6</sub> nanocrystals were used to activate O<sub>2</sub> efficiently and selectively for the photocatalytic transformation of 4-hydroxycoumarins to functional 2-hydroxy-benzofuran-3(2<em>H</em>)-ones under an air atmosphere. Polyfunctionalized benzofuran-3(2<em>H</em>)-ones with a quaternary carbon center can be selectively obtained in moderate to good yields at room temperature <em>via</em> 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).</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"26 20","pages":"Pages 10383-10389"},"PeriodicalIF":9.3000,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Green Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S1463926224007878","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
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).
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.