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radicals as Chiral Catalysts for Asymmetric radical Cyclization Reactions

Chinese Journal of Chemistry 2024年第19期42卷 2412-2416页

作者： Quan-Qing Zhao Min Gu Jia-Rong Chen Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening College of PharmacyJliangsu Ocean UniversityLianyungangJiangsu 222005China Engineering Research Center of Photoenergy Uitilization for Pollution Control and Carbon Reduction College of ChemistryCentral China Normal UniversityWuhanHubei 430079China

Due to the innate highly reactive properties and short life-time,organic free radicals can often serve as promoters or intermediates to engage in various radical transformations,which are often otherwise difficult to access by ionic pathway-based *** the evolvement of radical chemistry,chiral radical catalyzed-transformations have recently emerged as an attractive and robust platform for synthesis of chiral molecules of ***,we highlight several creative and strategic advances in chiral radical catalyst design,cyclization reaction achievements,and future challenges.

关键词： Chiral radical catalysis radical cyclization Thiyl radical boryl radical Asymmetric synthesis

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Atomically Precise Metal Nanoclusters as Single Electron Transferers for Hydroborylation

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Precision Chemistry 2023年第3期1卷 175-182页

作者： Wanli Zhu Sheng Zhang Weigang Fan Ying Yang Hongliang Zhao Wenwen Fei Hong Bi Jian He Man-Bo Li Zhikun Wu Institute of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230601P.R.China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031P.R.China College of Materials and Chemical Engineering West Anhui UniversityLu’anAnhui 237015P.R.China School of Material Science and Engineering Anhui UniversityHefeiAnhui 230601P.R.China Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong KongHong KongP.R.China

The emergence of metal nanoclusters with atomically precise compositions and structures provides an opportunity for in-depth investigation of catalysis mechanisms and structure−property correlations at the ***,a serious problem for metal nanocluster catalysts is that the ligands inhibit the catalytic activity through deactivating the surface of the ***,we introduce a novel catalytic mode for metal nanoclusters,in which the nanoclusters initiate the catalysis via single electron transfer(SET)without destroying the integrity of nanoclusters,providing a solution for the contradiction between activity and stability of metal *** illustrated that the novel activation mode featured low catalyst loading(0.01 mol%),high TOF,mild reaction conditions,and easy recycling of catalyst in alkyne hydroborylation,which often suffered from poor selectivity,low functional group tolerance,***,the catalyst[Au_(1)Cu_(14)(TBBT)_(12)(PPh_(3))_(6)]^(+)(TBBTH:p-tert-butylthiophenol)can be applied in highly efficient tandem processes such as hydroborylation−deuteration and hydroborylation−isomerization,demonstrating the utility of the introduced activation mode for metal nanoclusters.

关键词： atomically precise metal nanocluster single electron transfer hydroborylation boryl radical tandem catalysis

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