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A New Sesquiterpene from ligularia Songarica

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Chinese Chemical Letters 1999年第1期10卷 29-30页

作者： Bo FU Xiu Ping YANG jie WANG Zhong Jian JIA(institute of organic chemistry, State key laboratory of applied organic chemistry,lanzhou university, lanzhou, 730000) lanzhou Univ Inst Organ Chem State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China

A new bisabolane sesquiterpene, 5 beta-acetoxy-4 beta, 8-diangeloyloxy-2 beta,3 beta, :10,11-diepoxy-bisabola-7 (14)-ene, was isolated from the roots of ligularia songarica and its structure was elucidated on the basi... 详细信息

关键词： bisabolane new sesquiterpene ligularia songarica

Formation of the [M+NH_4]^+ Ious of Some Mouo-and Di-saccharides in Fast Atom Bombardment Mass Spectrometry

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Chinese Chemical Letters 1997年第10期8卷 879-882页

作者： Jian Jun ZHAI Fau Zhi ZHAO Deug Gang HUANG Yao Zu CHEN (State key laboratory of applied organic chemistry , lanzhou university , lanzhou 730000Department of chemistry , Zhejiang university , Hangzhou 310027)Jin Skan GUO(gansu institute of Plast State key Lab. of Appl. Organ. Chem. Lanzhou University Lanzhou 730000 China Department of chemistry Zhejiang University Hangzhou 310027 China gansu Inst. of Plastics and Leather Lanzhou 730000 China

In positive-ion fast atom bombardment (FAB) mass spectrometry, when mono- and di- saccharides are mixed with an appropriate amount of NH4Cl, a highly abundan peak [M+NH4]+appers in FAB mass spectra . From the adduct ... 详细信息

关键词： Mass Atom Ious of Some Mouo-and Di-saccharides in Fast Atom Bombardment Mass Spectrometry M+NH4 Formation of the NH

LOW-VALENT TITANIUM INDUCED REDUCTIVE COUPliNG REACTION OF AROMATIC α-HYDROXY KETONES

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Chinese Chemical Letters 1992年第4期3卷 279-280页

作者： Zi jie HOU li dun liU~(**) yu lin li State key laboratory of applied organic chemistry, institute of organic chemistry of lanzhou Univercity, lanzhou 730000 Ningxia Medical College, Yinchuan 750004

Treatment of aromatic α-hydroxy ketones with an activated Ti(O) reagent, prepared by reduction of TiCl_3 with a Zn-Cu couple, effects an intermolecular coupling reaction leading to the (Z)-1, 2, 3, 4-tetrarvl-2-buten... 详细信息

关键词： ppm HYDROXY KETONES LOW-VALENT TITANIUM INDUCED REDUCTIVE COUPliNG REACTION OF AROMATIC

Synthetic Control of Thorium Metal-organic Frameworks for Sequencing and Sensing of Radioiodine Species

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Chinese Journal of chemistry 2024年第1期42卷 20-28,I0004页

作者： yu Ju Zi-Jian li xue Wang jie Qiu Yiuhon Chan Zhi-Hui zhang Mingyang He Jian lin Jiangsu key laboratory of Advanced Catalytic Materials and Technology Changzhou UniversityNo.21Gehu Middle RoadChangzhouJiangsu 213164China Schoolof Nuclear Science and Technology Xi'an Jiaotong UniversityNo.28West Xianning RoadXianShaanxi 710049China key laboratoryof Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of Sciences2019JiaLuoRoadShanghai 201800China

Exploring the physiochemical properties and expanding the applications of actinide-containing materials is paramount to address the escalating challenge of radioactive waste ***,unlocking the full potential of these materials is largely crippled by the radiotoxicity of the *** report here two porous and luminescent thorium-based metal-organic frameworks(Th-BITD-1 and Th-BITD-2)that serve as a bifunctional platform for sequencing and sensing of radioiodine,a much more radioactive fission product discharged during the nuclear fuel *** particular,Th-BITD-1 displays better iodine uptake performance than Th-BITD-2 via the solution-based process and vapor diffusion with the maximum adsorption capacities of 831 and 1099 mg/g,*** thermore,Th-BITD-1 can function as a highly sensitive luminescence sensor for iodate with a quenching constant(Ksv)of 6.6(5)×10^(3) M^(-1)and a detection limit of 2.02μM,respectively,outperforming 2.96(6)×10^(3)M^(-1)and 10.5μM of ***,a positive correlation between the sensing efficacy and the iodate adsorption capacity has been *** work highlights the opportunity in designing novel actinide-based MOFs for their potential applications in radiological fields,e.g.,radionuclide separation and detection.

关键词： Thorium Metal-organic frameworks Adsorption Detection lodine Actinides Radiochemistry Luminescence

A Novel Dimeric Eremophilane from ligularia virgaurea spp. oligocephala

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Chinese Chemical Letters 2005年第11期 61-64页

作者： Quan Xiang WU1, Xia liU2, Yan Ping SHI1, 2 1State key laboratory of applied organic chemistry, lanzhou university, lanzhou 730000 2key laboratory for Natural Medicine of gansu Province, lanzhou institute of Chemical Physics, Chinese Academy of Sciences, lanzhou 730000

A novel dimeric eremophilane, ligulolide B, was isolated from the alcoholic extract of the whole plant of ligularia virgaurea spp. oligocephala. The structure was elucidated by various spectroscopic methods including ... 详细信息

关键词： ligularia virgaurea spp. oligocephala sesquiterpene dimeric eremophilane

Synthesis of New 1,5-Diaryl-4-（N-aryl-2-diazo-3-oxopropionamide- 3-yl）-1,2,3-triazle

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Synthesis of New 1,5-Diaryl-4-（N-aryl-2-diazo-3-oxopropiona...

Exploring formation mechanism and source attribution of ozone during the 2019 Wuhan Military World Games:Implications for ozone control strategies

中国化学会第四届有机化学学术会议

作者： WANG, Dong-Dong QUAN, Bin DONG, Heng-Shan (State key laboratory of applied organic chemistry, institute of organic chemistry, College of chemistry and Chemical Engineering, lanzhou university, lanzhou 730000) (College of Science and Engineering, gansu Association university, lanzhou 730000)

＜正＞The multifunctional 1H-1,2,3-triazle derivates received more and more attention for its numerous applications. We have synthesized nine new 1,5-diaryl-4-（N-aryl-2-diazo-3-oxopropionarnide-3-yl）-1,2,3-triazle derivatives （4a-4i） according to the synthetic route in Scheme 1. （4E）-N-（4-Chlorophenyl）-5-（3-chlorophenyl）-2-diazo-3-oxopent-4-enoic acid amides （3） were synthesized by the reaction of iV-（4-chlorophenyl）-2-diazo-3-oxobutyra-mide （2） with various arylaldehydes. Compound 3 and various aryl azides are dissolved in toluene and refluxed for

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Journal of Environmental Sciences 2024年第2期136卷 400-411页

作者： Lei zhang lili Wang Runyu Wang Nan Chen yuan Yang Ke li jie Sun Dan Yao yuesi Wang Minghui Tao Yang Sun institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China university of the Chinese Academy of Sciences Beijing 100049China Hubei Ecological Environment Monitoring Center Station Wuhan 430072China Guizhou Research and Designing institute of Environmental Sciences Guizhou Academy of Environmental Science and DesignGuiyang 550081China Jiangsu key laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China School of Environment Key Laboratory for Yellow River and Huai River Water Environment and Pollution ControlMinistry of EducationHenan Normal UniversityXinxiang 453007China key laboratory of Regional Ecology and Environmental Change School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China

A series of emission reduction measures were conducted in Wuhan,Central china,to ensure good air quality during the 7th Military World Games(MWG)in October *** better understand the implications for ozone(O_(3))pollution control strategies,we applied integrated analysis approaches based on the de-weathered statistical model,parameterization methods,chemical box model,and positive matrix factorization *** the MWG,concentrations of O_(3),NO_x,and volatile organic compound(VOCs),OFP(O_(3)formation potential),L_(OH)(OH radical loss rate)were 83μg/m^(3),43μg/m^(3),26 ppbv,188μg/m^(3),and 3.9 s^(-1),respectively,which were 26%,18%,3%,15%,and 13%lower than pre-MWG values and 6%,39%,30%,33%,and 50%lower than post-MWG values,*** removing meteorological influence,O_(3)and its precursors during the MWG decreased largely compared with post-MWG values,and only O_(3),NO_(2),and oxygenated VOCs(OVOCs)declined compared with pre-MWG values,which revealed the emission reduction measures during the MWG played an important role for O_(3)*** six VOCs sources,the mass contributions of biomass burning and solvents usage during the MWG decreased largely compared with pre-MWG values.O_(3)production was sensitive to VOCs and the key species were aromatics,OVOCs,and alkenes,which originated mainly from solvents usage,biomass burning,industrial-related combustion,and vehicle *** O_(3)concentration during the strict control was mainly caused by OVOCs reduction due to biomass burning ***,the O_(3)abatement strategies of Wuhan should be focused on the mitigation of high-reactivity VOCs.

关键词： VOCs Ozone Wuhan Military World Games Source apportionment Relative incremental reactivity Random forest

Synthesis and Photophysical Properties of a Highly Selective Copper Fluorescent Indicator Based on Aminoquinoline Substituted BODIPY

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Synthesis and Photophysical Properties of a Highly Selective...

Synthesis of （4E）-N-（4-Chlorophenyl）-5-substituted-2-diazo-3-oxopent-4-enoic Acid Amides

第六届全国物理无机化学会议

作者： jie Cui,Wenwu Qin~* key laboratory of Nonferrous Metal chemistry and Resources Utilization of gansu Province and State key laboratory of applied organic chemistry,College of chemistry and Chemical Engineering, lanzhou university,lanzhou 730000,P.R.china.

＜正＞A highly selective fluorescent indicator for copper,substituted with an aminoquinoline group at the position 3 of the BODIPY has been *** indicator has very low fluorescence quantum yield in acetonitrile with em... 详细信息

关键词： photophysics aminoquinoline BODIPY fluorescence spectroscopy time-resolved fluorescence copper probe

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Synthesis of （4E）-N-（4-Chlorophenyl）-5-substituted-2-dia...