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Direct Introduction of EthoxycarbonyldifluoromethyI-Group to heteroarenes with Ethyl Bromodifluoroacetate via Visible-Light Photocatalysis

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Chinese Journal of Chemistry 2013年第7期31卷 885-891页

作者： Qingyu Lin Lingling Chu Feng-Ling Qing Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China College of Chemistry Chemical Engineering and Biotechnology Donghua University 2999 North Renmin Lu Shanghai 201620 China

A mild and versatile approach for the direct introduction of ethoxycarbonyldifluoromethyl-group to heteroarenes via visible-light photocatalysis has been developed. The new photoredox protocol has enabled the difluoro... 详细信息

关键词： difluoromethylenation heteroarenes visible-light photocatalysis

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Advances in Radical Oxidative C--H Alkylation of N-heteroarenes

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Chinese Journal of Chemistry 2017年第3期35卷 271-279页

作者： Jun-Rong Zhang Li Xu Yan-Yan Liao Jian-Chao Deng Ri-Yuan Tang Department of Applied Chemistry College of Materials and Energy South China Agricultural University Guangzhou Guangdong 510642 China

This review summarizes recent development in C—H alkylation of N ‐heteroarenes via the radical oxidative coupling process. A variety of alkyl radical sources (including alkanes, ethers, alcohols, carboxylic acids, o... 详细信息

关键词： radical oxidative coupling C—H functionalization alkylation heteroarenes

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Fabrication of Graphitic Carbon Nitride-Based Film:An Emerged Highly Efficient Catalyst for Direct C-H Arylation under Solar Light

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Chinese Journal of Chemistry 2021年第3期39卷 633-639页

作者： Surabhi Chaubey Rajesh K.Yadav Tae Wu Kim Tara Chand Yadav Abhishek Kumar D.K.Dwivedi B.K.Pandey Atul P.Singh Department of Chemistry and Environmental Science Madan Mohan Malaviya University of TechnologyGorakhpur-273010U.PIndia Center for Nanomaterials and Chemical Reactions Institute for Basic Science(IBS)Daejeon 34141Republic of Korea Department of Chemistry Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Biotechnology Indian Institute of Technology Roorkee-247667India Department of Chemistry Institute of ScienceBanaras Hindu UniversityIndia Department of Physics and Material Science Madan Mohan Malaviya University of TechnologyGorakhpur 273010U.PIndia Department of Chemistry Chandigarh UniversityMohaliIndia

Main observation and conclusion Photoredox C-H bond formation can proceed in aerobic environment under solar light and has therefore become ***-days,different types of expensive novel metal complexes and nanomaterials have been urbanized as photocatalysts for direct C-H bond formation in between derivatives of heteroarenes(HAs)and aryl diazonium *** photocatalysts,however,still suffer from poor stability,high cost,and ***,a graphitic carbon nitride-based fluorescein isothiocyanate(g-C_(3)N_(4)-FITC)film pho-tocatalyst has been reported,which shows ecellent light harvesting ability,and band gap suitability to catalyze the metal free direct C-H arylation of HAs under solar light at ambient ***,the g-C_(3)N_(4)-FITC film photocatalyst can be reused four times without significant loss of activity,confirming the excellent photocatalytic *** current strategy to constructa g-C_(3)N_(4)-FITC film photocatalyst for direct C-H arylation opens a new path towards replacing metal-based catalysts in fine chemical Sy nthesis.

关键词： Photocatalysis g-C_(3)N_(4)-FITC film photocatalyst C-H activation heteroarenes Cyclic voltammetry

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抗衡阴离子促进的手性二胺钌配合物催化亚胺的不对称氢化反应研究（英文）

抗衡阴离子促进的手性二胺钌配合物催化亚胺的不对称氢化反应研究...

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中国化学会第30届学术年会

作者： Qing-Hua Fan Institute of Chemistry Chinese Academy of Sciences

Transition metal-catalyzed asymmetric hydrogenation has been established as one of the most powerful tools for the preparation of a wide range of enantiomerically pure compounds in organic synthesis. Despite great efforts made in this field, asymmetric hydrogenation of imines, particularly N-containing heteroaromatic compounds, remains a major challenge.1 In this presentation, we will report our recent results on the asymmetric hydrogenation of the often-problematic acyclic and cyclic imines as well as some N-containing heteroarenes with chiral cationic Ru-diamine catalysts.2 It was found that the phosphine-free chiral ruthenium diamine complexes are very efficient catalysts for the asymmetric hydrogenation of a broad range of imine-type substrates. Most interestingly, the achiral counteranions are critically important for the high enantioselectivity and diastereoselectivity. The related catalytic mechanism will also be discussed in this presentation.

关键词： asymmetric hydrogenation chiral diamine imines heteroarenes ruthenium

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