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Chinese Journal of Chemistry 2019年第7期37卷 647-656页

作者： Qi Zhang bing-feng shi Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 China

What is the most favorite and original chemistry developed in your research group? Developing PIP amine for regio-and enantioselective methylene C-H activation. How do you get into this specific field? Could you pleas... 详细信息

关键词： Regioselectivity Stereoselectivity

Macrocyclic peptide construction through C-H activation strategy

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Science Bulletin 2018年第19期63卷 1238-1240页

作者： Kai Chen bing-feng shi Department of Chemistry Zhejiang University Division of Chemistry and Chemical Engineering California Institute of Technology

Peptides are biomolecules that commonly engage in biological activities of native bio-systems, and have also been inspiringly investigated, synthesized and utilized by human beings for clinical purposes. The function of a peptide is typically dependent on its amino acid sequence and three-dimensional structure. Among all types of peptides, macrocyclic ones that confer well-defined con-

关键词：激活肽生物活动氨基酸

Copper-catalyzed direct acyloxylation of C(sp^2)–H bonds with Benzoic acids

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Science China Chemistry 2015年第8期58卷 1302-1309页

作者： Sheng Zhao Fa-Jie Chen Bin Liu bing-feng shi Department of Chemistry Zhejiang University

A copper-catalyzed acyloxylation of C(sp2)–H bond with sterically bulky benzoic acids was *** protocol is compatible with a broad range of functional groups and could proceed in gram scale,providing an efficient and ... 详细信息

关键词： copper C-H activation acyloxylation ester bidentate

Ni-Catalyzed Chelation-Assisted Direct Functionalization of Inert C—H Bonds

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Chinese Journal of Chemistry 2020年第6期38卷 635-662页

作者： Yan-Hua Liu Yu-Nong Xia bing-feng shi Department of Chemistry Zhejiang UniversityHangzhouZhejiang 310027China

During the last two decades,impressive advancements have been achieved in transition metal-catalyzed chelation-assisted C—H functionalization *** reactions in this field are still dominated by precious 4d or 5d metals(e.g.,Pd,Rh,Ir),the 3d base metals(e.g.,Ni,Co,Cu,Fe)have made significant headway partially due to their relatively large abundance,low cost,low toxicity as well as their occasionally occurred novel reactivity when compared to their noble *** review will give a comprehensive summary on Ni-catalyzed functionalization of inert C—H bonds assisted by chelation *** clarity,the content is classified by the newly formed chemical bonds,namely C—C,C—N,C—chalcogen and C—halogen bond formation.

关键词： reaction. metals Functional

Rhodium(Ⅲ)-Catalyzed C-H Vinylation of Arenes:Access to Functionalized Styrenes

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Chinese Journal of Chemistry 2018年第12期36卷 1143-1146页

作者： Jun Zhou Xin Li Gang Liao bing-feng shi Department of Chemistry Zhejiang UniversityHangzhouZhejiang 310027China School of Chemistry and Biological EngineeringChangsha University of Science &TechnologyChangshaHunan 410114China

An effective method has been developed for Rh(III)‐catalyzed direct vinylation of arenes to give functionalized styrenes, using vinyltriethoxysilane as a convenient and inexpensive vinyl source. A wide variety of substrates, including 1‐aryl‐2‐pyrrolidinones, anilines, benzamides and ketones, were compatible with this reaction. Moreover, this method can be applied to the two‐step synthesis of functionalized indoles. Mechanistic investigation reveals that the reaction probably proceeds through an oxidative Heck/desilylation pathway.

关键词： C—H activation olefination rhodium C—C coupling Heck reaction elimination

Coordination-assisted, transition-metal-catalyzed enantioselective desymmetric C–H functionalization

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Organic Chemistry Frontiers 2022年第5期9卷 1458-1484页

作者： Xin Yu Zhuo-Zhuo Zhang Jun-Long Niu bing-feng shi Department of Chemistry Zhejiang UniversityHangzhouZhejiang310027China School of Food and Biological Engineering Chengdu UniversityChengduSichuan610106China Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou 450001China

Transition-metal-catalyzed asymmetric C–H functionalization has gradually emerged as a powerful tool for the creation of structural and chiral complexity in an atom-and step-economical *** nature of this strategy provides a variety of methodologies to overcome the limitation of enantioselective desym-metrization caused by the synthesis of preformed multifunctional symmetric substrates.

关键词： catalyzed symmetric enantioselective

Palladium-catalyzed ortho-C–H silylation of biaryl aldehydes using a transient directing group

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Science China Chemistry 2020年第7期63卷 875-880页

作者： Yong-Jie Wu Qi-Jun Yao Hao-Ming Chen Gang Liao bing-feng shi Department of Chemistry Zhejiang University Hangzhou 310027China School of Chemical&Environmental Engineering Wuyi UniversityJiangmen 529020China

A strategy for Pd-catalyzed ortho-C–H silylation of biaryl aldehydes enabled by a transient auxiliary is presented. This protocol provides a broad range of ortho-silylated biaryl aldehydes in good yields. The silyl moiety can be further functionalized under mild conditions, rendering the silylated products useful building blocks. Notably, this protocol also offers an opportunity to establish a platform for expeditious synthesis of structurally diverse axially chiral biaryl aldehydes via sequential atroposelective interannular C–H functionalization/intraanular C–H silylation.

关键词： transient directing group palladium biaryl aldehydes C-H silylation

Copper-Catalyzed Modular Access to N-Fused Polycyclic Indoles and 5-Aroyl-pyrrol-2-ones via Intramolecular N-H/C-H Annulation with Alkynes:Scope and Mechanism Probes

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Chinese Journal of Chemistry 2020年第12期38卷 1545-1552页

作者： Yan-Hua Liu Hong Song Chi Zhang Yue-Jin Liu bing-feng shi Department of Chemistry Zhejiang UniversityHangzhouZhejiang 310027China

of main observation and concusion Copper-catalyzed intramolecular N-H/C-H annulation with alkynes has been developed.A vaniety ofdensely functionalized heterocycles,such as pyrrolo[1,2-a]indoles,indolo[1,2-c]quinazolin-2-ones,oxazolo[3,4-o]indoles,and imidazo[1.5-o]indoles,eresynthesized in an atom-and step-economical manner,owing to the high modularized feature of aniline moiety te linker moiety,as well as the *** simply changing the oxidant from di-tert-butyl peroxide(DTBP)to 2,2,6.6-tetramethylpiperidine-1-oxyl(TEMPo)the reacton could readily betransformed to the aminooxygenation pathway,which grabs one oxygen atom from the TEMPO to generate 5-aroy'-*** experi-ments indicate that viny radical is involved in this reaction and an amidyl-radical-initiated radical cascade might be responsible for this transformation.

关键词： moiety Copper radical

Stereoselective construction of atropisomers featuring a C-N chiral axis

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Green Synthesis and Catalysis 2022年第2期3卷 117-136页

作者： Yong-Jie Wu Gang Liao bing-feng shi Center of Chemistry for Frontier Technologies Department of ChemistryZhejiang UniversityHangzhou 310027China Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou 450001China Department of Chemistry National University of SingaporeSingapore 117543Singapore School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

Atropisomeric C-N compounds belong to an important class of axially chiral ***,whereas the asymmetric synthesis of biaryl atropisomers have been well established,general and efficient strategies to access single enantiomers of C-N atropisomers are still *** recently,innovative methods have been developed,providing new opportunities for the highly stereoselective synthesis of this vital class of ***,we comprehensively summarize the development in this emerging field and give some insights into future *** is placed on the synthetic strategies.

关键词： Atropisomers C-N Chiral axis Asymmetric synthesis Stereoselectivity

Synthesis and fluorescence properties of CdTe:Eu3+ nanocrystals and core-shell SiO2-coated CdTe:Eu3+ nanospheres

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Rare Metals 2019年第10期38卷 989-995页

作者： Jun-Fang Gao Jun-Hong Yang Xiao-Yong Zhang Jun Zhao Xing-Wang Liu bing-feng shi Key Laboratory of Materials Physical Chemistry Baotou Teachers CollegeBaotou 014000China Institute of Chemistry Northeast Normal UniversityChangchun 130000China

Eu3+ doped-CdTe(CdTe:Eu3+)nanocrystals were prepared via a facile hydrothermal method,and Eu3+ was successfully incorporated into the crystal lattice of CdTe and measured by X-ray powder diffraction(XRD),transmission electron microscopy(TEM),ultraviolet-visible(UV-Vis) absorption spectroscopy and fluorescence *** CdTe:Eu^3+ nanocrystals still have a cubic crystal structure,and the corresponding XRD peaks of CdTe:Eu3+nanocrystals shift to larger angles compared with those of pure *** CdTe:Eu3+ nanocrystals are monodisperse and the particles size is about 2-4 *** with pure CdTe,the CdTe:Eu^3+ nanocrystals have larger band gap and thus exhibit blueshift in the emission spectra,which could be accounted for by the energy transfer between Eu^3+ and *** enhance the stability and functionality of CdTe:Eu3+nanocrystals,the CdTe:Eu3+nanocrystals were coated with SiO2 and the core-shell SiO2-coated CdTe:Eu3+nanocrystals(CdTe:Eu^3+@SiO2) were prepared via microemulsion *** results show that CdTe:Eu3+nanocrystals are uniformly dispersed in the shell,and CdTe:Eu3+@SiO2 nanospheres are uniformly spherical with an average diameter of about 75 *** fluorescence emission of CdTe:Eu3+@SiO2(567 nm) shows a blueshift compared with that of CdTe:Eu^3+nanocrystals(632 nm),possibly because of altered surface properties after SiO2 ***:Eu^3+and CdTe:Eu^3+@SiO2 with tunable photoluminescence are potentially useful in fabricating optical and bioimaging devices.

关键词： CdTe:Eu^3+nanocrystals Doping Core-shell SiO2 Fluorescent properties