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Metal-organic supramolecular nanoarchitectures by Ru(Ⅱ)bis-(terpyridine)-bridged pillar[5]arene dimers with triphenylamine

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Chinese Chemical Letters 2021年第1期32卷 357-361页

作者： Tianwei Cui Guoxing Liu Wenjing Zhang xinju zhu Juhua Leng Xin-Qi Hao Pu Mao Mao-Ping Songa College of Chemistry Zhengzhou UniversityZhengzhou 450001China College of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China

A metal-organic photoinduced electron transfer(PET) supramolecular nanoarchitecture comprised of Ru(Ⅱ) bis(terpyridine)-modified pillar[5]arene(electron acceptor) and triazole triphenylamine amyl cyanide(electron donor) has been designed and *** the comparison of diverse solvents and acceptors,the two conditions,i.e.,modification of pillar[5]arene to donor and weak polar solvent are benefit for the occurrence of "efficient PET" because of shorter D-A distance in the presence of pillar[5]***,the fluorescence and PET process of the supramolecular assembly could be further modulated by solvent conversion and another competitive *** study provides a supramolecular method to design and construct tunable PET systems and PET-based smart materials.

关键词： Supramolecular chemistry Pillararene Self-assemble Tunable PET Host-guest complexation

Tunable aggregation-induced fluorescent and pressure-responsive luminescence supramolecular cages achieved by subcomponent self-assembly

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Chinese Chemical Letters 2023年第6期34卷 421-425页

作者： Lingling Miao xinju zhu Guoxing Liu Xin Han Wenping Xie Shuai Lu Long Zhang Kai Wang Linlin Shi Siyu Lu Xinqi Hao Maoping Song College of Chemistry Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China College of Science Henan Agricultural UniversityZhengzhou 450002China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China

Three discrete tetrahedral metallo-supramolecular cages were designed and constructed using truxenepended base *** to the synergistic rigidifying effect of unsymmetric cyano-substituted oligo(pphenylene-vinylene)(u-COPV)suspended by the truxene skeleton,the resulting supramolecular cages were confirmed to exhibit significant aggregation-induced emission(AIE)accompanied by an interesting solvatochromic fluorescent behavior as well as a porous honeycomb-like state during *** particular,the anti-counterfeiting performance and emission behaviors of the cages in the solid state under external hydrostatic pressure were investigated.

关键词： Supramolecular cage Self-assembly Aggregation-induced emission Solvatochromic fluorescent behavior Anti-counterfeiting

Visible-light induced photocatalyst-free difluoromethylation of quinoxalinones with difluorosulfones

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Green Synthesis and Catalysis

Green Synthesis and Catalysis 2024年第4期5卷 277-281页

作者： Linlin Shi Tiantian Li Wenjing Zhang Weinan Hu xinju zhu Yixin Lu Guang-Jian Mei Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhouHenan 450001China Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore

Visible-light induced direct C–H difluoromethylation of quinoxalinones with 2-((difluoromethyl)sulfonyl)benzo[d]thiazole has been developed for the first time.A broad range of quinoxalinones were well tolerated and reacted with difluorosulfone smoothly to give the corresponding products in moderate to good ***,no external photocatalyst or oxidant was required,which provides a practical and green protocol to access difluoromethylated ***,the control experiments demonstrated a radical mechanism,and the density functional theory(DFT)calculations indicated the radicals were generated through the formation of an electron donoracceptor(EDA)complex.

关键词： Quinoxalinones Difluoromethylation Visible-light induced Photocatalyst-free Difluorosulfones

Highly Efficient Hydrogenation of Ketones into Alcohols with a Novel Chiral Terpyridine Ruthenium(Ⅱ) Complex

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Highly Efficient Hydrogenation of Ketones into Alcohols with...

河南省化学会2020年学术年会

作者： Linlin Shi Lingling Miao xinju zhu Xin-Qi Hao Mao-Ping Song College of Chemistry Zhengzhou University

A novel cationic ruthenium(II) complex bearing a symmetrical 4-methoxy-2,6-bis(pyridinioacetyl)pyridine ligand. was synthesized and structurally characterized by infrared spectra, UV-Vis spectra, NMR analysis and X-ray crystallographic determinations. This complex has exhibited good catalytic activity in the transfer hydrogenation of ketones. With the well-designed Ru(II) complex, the hydrogenation of a wide range of ketones proceeded smoothly under relative mild reaction conditions, affording the corresponding alcohols with excellent isolated yields(up to 99%)(Scheme 1).

关键词： Ru(Ⅱ) complexes Pincer Transfer hydrogenation

Ruthenium-Catalyzed Bis-Allylation of Imidazopyridines via Double C-H Activation

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Ruthenium-Catalyzed Bis-Allylation of Imidazopyridines via D...

河南省化学会2020年学术年会

作者： Shuang Liu Linlin Shi xinju zhu Xin-Qi Hao Mao-Ping Song College of Chemistry Zhengzhou University

Allylarenes are prevalent in various nature products and pharmaceuticals,which could also be converted into other functionalities. Recently,strained rings have emerged as previliged coupling partners in chelation-assisted C-H functionalization via sequential C-H activation and ring *** this principle,allylarenes could also be prepared using vinylcyclopropanes (VCPs) and vinyl cyclic carbonates (VCCs) as the allylation reagents. A Ru(II)-catalyzed bis-allylation of imidazopyridines with vinylcyclopropanes or vinyl cyclic carbonate has been successfully ***,pharmacophore imidazopyridine was utilized as an intrinsic directing group,which gave access to value-added bis-allylated products in high yields via double tandem C-H and C-C/C-O *** current methodology was featured with broad substrate scope,good functional group compatibility,and operational simplicity (Scheme1).

关键词： Imidazopyridine VCP VCC allylation ruthenium

Rh(Ⅲ)-Catalyzed C-H Cyanation of 2H-Indazole with N-Cyano-N-phenyl-p-toluenesulfonamide

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Rh(Ⅲ)-Catalyzed C-H Cyanation of 2H-Indazole with N-Cyano-N...

河南省化学会2020年学术年会

作者： Binghui Liu Hui Jiang xinju zhu Xin-Qi Hao Mao-Ping Song College of Chemistry Zhengzhou University

A Cp*Rh(Ⅲ)-catalyzed direct C3 cyanation of 2 H-indazoles with N-Cyano-N-phenyl-ptoluenesulfonamide(NCTS) has been realized via chelation-assisted strategy. The catalytic system promotes stereocontrolled formation of functionalized scaffolds with in situ generation of a new C-C bond functionality. The methodology enables regioselective access to various ortho-cyanated phenylindazole with broad substrate scope and good functional group compatibility in moderate to good yields, can typically be performed under air reaction conditions(Scheme 1).

关键词： Rh(Ⅲ)-catalyzed Cyanation 2H-indazole NCTS

Temperature-controlled chalcogenation and chalcogenocyanation of imidazopyridines in water under transition-metal-free conditions

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Temperature-controlled chalcogenation and chalcogenocyanatio...

河南省化学会2020年学术年会

作者： Yu-Shen zhu Yu-ting Xue Hui Jiang xinju zhu Xin-Qi Hao Mao-Ping Song College of Chemistry Zhengzhou University

Organochalcogenides have been recognized as essential structural moieties prevalence in various natural products,pharmaceuticals,and materials science. Meanwhile,chalcogen functionalities play an important role in organic synthesis and catalytic applications. A sustainable and transition metal-free approach for C3 chalcogenation and chalcogenocyanation of imidazopyridines with KXCN (X=S or Se) has been developed under mild ***,this reaction was performed in the presence of catalytic iodine in aqueous medium,which afforded either chalcogenated or chalcogenocyanated imidazopyridines under temperature *** current protocol featured a broad substrate scope,transition metal-free and organic solvent-free conditions,operational convenience,and gram-scale production (Scheme 1).

关键词： Imidazopyridine KSeCN chalcogenation chalcogenocyanation catalysis

Catalyst-Free Friedel-Crafts Hydroxyalkylation of Imidazo[1,2-α]pyridines with Ethyl Trifluoropyruvate

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Catalyst-Free Friedel-Crafts Hydroxyalkylation of Imidazo[1,...

中国化学会全国第十二届有机合成化学学术研讨会

作者： Li,Ke Yang,Ming-Ze Lu,Shuai zhu,xinju Hao,Xin-Qi Song,Mao-Ping College of Chemistry and Molecular Engineering Henan Key Laboratory of Chemical Biology and Organic ChemistryZhengzhou University

Remarkable developments have been made on the synthesis of imidazo[1,2-α]pyridine derivatives,1] making a wide range of drugs,including alpidem,olprinone,minodronic acid,zolimidine,necopidem,saripidem and zolpidem,more commercially *** molecules have the ability to modulate biological functions.2] Despite the success of previous work,the development of catalyst-free F-C hydroxyalkylation reaction with improved efficiency is still a long-standing scientific ***,we firstly report the high efficiency of catalyst-free F-C hydroxyalkylation of imidazo[1,2-α]pyridines with ethyl trifluoropyruvate in isopropyl ether.

关键词： Catalyst Free Friedel-Crafts hydroxyalkylation Imidazo[1,2-α]pyridines

联苯骨架手性双咪唑啉配体的合成及在不对称环丙烷化中的应用（英文）

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有机化学 2018年第1期38卷 118-123页

作者：朱新举牛俊龙赵雪梅郝新奇宋毛平郑州大学化学与分子工程学院郑州450001

一系列含有轴手性和中心手性的联苯双咪唑啉配体被首次合成.相较于传统的策略,Ullmann偶联方法表现出更高的反应效率,尤其对于含有叔丁基的配体.得到的配体被进一步应用于在铜催化下的不对称环丙烷化.

关键词：咪唑啉轴手性中心手性不对称环丙烷化