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Iridium complex of porphycene:a new member of metalloporphycene

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Science China Chemistry 2020年第5期63卷 682-686页

作者： Yi chang Fei Zhao Fan Wu Nana Ma Xiaoming Ma Yue Zhao kin shing chan Zhen Shen State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210046China Key Laboratory of Green Chemical Media and Reactions Ministry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China

Iridium(Ⅲ)porphycene complex was synthesized and structurally characterized for the first *** introduction of the posttransition iridium(Ⅲ)ion not only significantly enhances the absorption intensity at the end of visible region,but also displays efficient singlet oxygen quantum yield(76%),which is applicable for photodynamic therapy in living cells.

关键词： porphycene iridium complex magnetic circular dichroism singlet oxygen photodynamic therapy

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Carbon-Carbon Bond Activation of Cyclopropanes byRhodium Porphyrin Complexes

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Carbon-Carbon Bond Activation of Cyclopropanes byRhodium Por...

中国化学会第四届卟啉与酞菁学术研讨会

作者： Shiyu Feng kin shing chan Department of Chemistry The Chinese University of Hong Kong

Achieving selective intermolecular aliphatic carbon-carbon bond activation（CCA） under mild conditions has long been a desirable,but very challenging goal.1 The CCA of cyclooctane catalyzed by Rh（ttp）H（ttp = 5,10,15,20-tetratolyporphyrinato dianion） at 120 °C has been reported.2 We have extended the substrate to cyclopropanes and now reported the CCA of cyclopropanes by rhodium porphyrin species to give a good yield of rhodium porphyrin alkyls at room temperature in 10 minutes in neutral media.

关键词： Selective CCA Cyclopropanes Rhodium porphyrin Mild conditions

Alkyl Carbon-Oxygen Bond Cleavage of Aryl Alkyl Ethers by Iridium and Rhodium Porphyrin Complexes in Alkaline Media

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Alkyl Carbon-Oxygen Bond Cleavage of Aryl Alkyl Ethers by Ir...

中国化学会第四届卟啉与酞菁学术研讨会

作者： Chen Chen kin shing chan Department of Chemistry The Chinese University of Hong Kong

Carbon-oxygen bonds are among the most common linkages in organic *** nature,aryl alkyl ether units build up the basic skeleton of lignocellulosic *** relative inertness of aliphatic C-O bond increases the difficulty of its utilization.1 The C-O bond cleavage of ethers has been reported under acidic and neutral media,2 while rarely reported in basic ***,we report base-promoted selective alkyl C-O bond activation（COA） of aryl alkyl ethers by iridium porphyrin *** the rhodium porphyrin analogue was employed,alkyl C-H bond activation（CHA） occurred parallel with alkyl C-O bond activation（COA）.

关键词： alkyl C-O Bond cleavage Group 9 metalloporphyrins

Hydrodehalogenation of Activated Alkyl Bromides with Water Catalyzed by Rhodium Porphyrin Complex

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Hydrodehalogenation of Activated Alkyl Bromides with Water C...

中国化学会第四届卟啉与酞菁学术研讨会

作者： Wu Yang Haojie Zhang kin shing chan Department of Chemistry The Chinese University of Hong Kong

For the reductive hydrodebromination,the reductants are usually H gas,alcohols,hydrosilanes,metal hydrides and so ***,as a green,economically more attractive reducing agent,is generally believed unlikely to be the hydrogen atom donor to carbon-centered radicals due to the high bond dissociation energy of H-OH bond(118 kcal/mol).Weakening this H-OH bond by the coordination of HO to a Lewis acid makes HO as a hydrogen atom donor *** examples employed CpTiCl,BMe3 or SmI as the Lewis acid.1 However,it involves a stoichiometric amount of the Lewis ***,based on our earlier success of employing water as the hydrogen source for hydrogenating carbon-carbon σ-bonds,2 we disclose a rhodium porphyrin complex catalyzed hydrodebromination of activated alkyl bromides with water as the attractive hydrogen source without any sacrificial reductant.

关键词： hydrodehalogenation of activated alkyl bromides water as the hydrogen source without any sacrificial reductant

Cobalt Porphyrin Catalyzed Carbon-Carbon Bond Transfer Hydrogenation with DMF

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Cobalt Porphyrin Catalyzed Carbon-Carbon Bond Transfer Hydro...

中国化学会第四届卟啉与酞菁学术研讨会

作者： Chun Meng Tam Ching Tat To kin shing chan Department of Chemistry The Chinese University of Hong Kong

The Co(ttp) catalyzed carbon-carbon bond transfer hydrogenation of [2.2]paracyclophane(PCP) with DMF was *** investigation suggested that the benzylic carbon-carbon bond of PCP reacts with Co II(ttp) to generate 1,subsequent homolysis of Co-C bond and hydrogen atom abstraction yield 2 and regenerate the Co(ttp) *** mechanism of cobalt porphyrin catalysis is distinctly different from the rhodium and iridium catalyses.1,2

关键词： C-C bond hydrogenation transfer hydrogenation cobalt porphyrin N,N-dimethylformamide

Visible Light Photocatalysis of Carbon-Carbon σ-Bond Anaerobic Oxidation of Ketones with Water by Rhodium and Cobalt Porphyrins

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Visible Light Photocatalysis of Carbon-Carbon σ-Bond Anaero...

中国化学会第十三届全国有机合成化学学术研讨会

作者： Siu Yin Lee Hong Sang Fung Shiyu Feng kin shing chan Department of Chemistry The Chinese University of Hong Kong

M（por）（M = Rh and Co）（por = porphyrinato dianion） reacted selectively with isopropyl ketones at the carbon（CO）-carbon（α） bond under room temperature to give high yields of M III（por） acyls and the corresponding oxidized carbonyl compounds up to 89 % ***（por）OH is proposed to be the C-C bond activation（CCA） *** stoichiometric reaction is further developed into the photocatalytic CCA both using UV and visible light sources（λ = 405 nm）.

关键词： Visible light photocatalysis Rhodium and Cobalt porphyrins anaerobic oxidation with water

第九族金属卟啉实现的选择性碳-碳键活化的研究

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中国科学：化学 2022年第8期52卷 1205-1223页

作者：冯诗钰陈建成云南大学化学科学与工程学院昆明650000 南京大学化学化工学院南京210046

过渡金属配合物实现有机物碳-碳键活化一直是有机化学领域的研究热点.活化反应中生成的金属-碳键中间体,可进一步催化转化合成新的官能化有机物.本文总结了本课题组及其他团队对第九族金属卟啉实现的选择性碳-碳键活化的研究发展,主要... 详细信息

过渡金属配合物实现有机物碳-碳键活化一直是有机化学领域的研究热点.活化反应中生成的金属-碳键中间体,可进一步催化转化合成新的官能化有机物.本文总结了本课题组及其他团队对第九族金属卟啉实现的选择性碳-碳键活化的研究发展,主要介绍了第九族金属卟啉活性中间体M^(Ⅰ)(por)^(−)、M^(Ⅱ)(por)自由基以及M^(Ⅲ)(por)OH(M=Ir、Rh、Co,por=卟啉二价阴离子)实现酮类、酯类、酰胺类、腈类、2,2,6,6-四甲基哌啶氮-氧-化物(TEMPO)、醚类和环烷烃等有机物的选择性碳-碳键活化当量反应,以及使用H_(2)O、异丙醇、N,N-二甲基甲酰胺(DMF)作为氢源实现碳-碳键氢解和H_(2)O作为氧化剂实现碳-碳键氧化的催化转化,并探讨了现有研究的改善以及未来发展的展望.

关键词：第九族金属卟啉选择性碳-碳键活化金属卟啉自由基金属卟啉氢氧化物 H_(2)O

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病毒哪里藏——核酸检测金标准

大学化学 2022年第9期37卷 206-211页

作者：高耿欣陈建成南京大学新生书院安邦书院南京210023 南京大学化学化工学院南京210023

以在校大学生小何在新冠疫情期间参与多轮核酸筛查的经历为背景,通过小何与同学以及医护人员的交流对话,分析作为诊断新冠肺炎金标准的核酸检测的优缺点和原理;并介绍补充手段抗原检测。

关键词：新冠病毒检测核酸金标准

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偶氮分子的武侠世界——千变万化的应用

大学化学 2022年第9期37卷 80-85页

作者：陈嘉上陈建成南京大学化学化工学院南京210046

五颜六色的偶氮分子作为偶氮染料,在生活中广泛用于衣服、化妆品和食品等,然而这些分子的作用远不止于此。本文从一个偶氮分子出发,通过它在分子武侠世界中的故事介绍了一种模拟壁虎的光控偶氮分子胶带,偶氮分子显色和变色机理,以及生... 详细信息

五颜六色的偶氮分子作为偶氮染料,在生活中广泛用于衣服、化妆品和食品等,然而这些分子的作用远不止于此。本文从一个偶氮分子出发,通过它在分子武侠世界中的故事介绍了一种模拟壁虎的光控偶氮分子胶带,偶氮分子显色和变色机理,以及生活中常用的分散染料的染色原理,并通过一场“毒校服”事件揭示了分散染料致癌的原因以及致癌的程度。之后通过一种偶氮类药物介绍了这类化合物在抗癌领域的应用,从而体现了偶氮分子广泛而又神奇的应用。

关键词：偶氮类化合物光控驱动器分散染料致癌性药物递送

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