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Synthesis of 6E-Geranylgeraniol-19-oic Acid

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Chemical Research in Chinese Universities 2003年第3期19卷 294-296页

作者： li Shu hua PENG li Zeng li Wei dong li yu lin National Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry Lanzhou UniversityLanzhou 730000P.R.China

The present paper deals with the facile synthesis of 6 E geranylgeraniol 19 oic acid(1), a naturally occuring alicyclic diterpene acid, by a Horner Wadsworth Emmons olefination of two readily available fragments 7 and 3.

关键词： Horner Wadsworth Emmons reaction 6E-Geranylgeraniol-19-oic acid Synthesis

Synthesis, Crystal Structure, Fluorescence, Thermal Stability and Magnetic Properties of the Dinuclear Manganese(Ⅱ) Complex [Mn_2(L)_2(2,2'-bipy)_2(H_2O)_5]_2·3H_2O

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Chinese Journal of Structural Chemistry 2015年第6期34卷 973-978页

作者： li Wei li Chang-Hong li yu-lin li Heng-Feng School of Materials Science and Engineering Central South University Department of Chemistry and Materials Science Hengyang Normal University Department of Chemical Engineering Hunan Institute of Technology

A new dinuclear manganese complex [Mn2（L）2（2,2＇-bipy）2（H2O）512·3H2O has been synthesized with MnSO4·H2O, 2,2＇-bibenzoic acid （H2L） and 2,2＇-bipyridine（2,2＇-bipy） in the mixed solvent ethanol and water. It crystallizes in monoclinic, space group Pi with a = 9.9944（10）, b = 21.939（2）, c = 25.628（3） A, a = 108.429（3）, β = 100.613（4）, 7 = 102.821（3）°, V = 4997.9（9） A3, Dc= 1.355 g/cm^3, Z = 2, F（000） = 2108, GOOF = 1.074, the R= 0.0626 and wR= 0.1531. The structure of the complex contains two [Mn2（L）2（2,2＇-bipy）2] units, ten coordinated H2O molecules and three uncoordinated H2O molecules. The fluorescence, thermal stability and magnetic properties of the complex were investigated.

关键词： dinuclear manganese complex fluorescence thermal stability and magnetic properties

Analytical Result on the Supercurrent Through a Superconductor/Quantum-Dot/Superconductor Junction

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Communications in Theoretical Physics 2002年第7期38卷 103-106页

作者： li Wei ZHU yu lin Tsung-Han State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University Beijing 100871 China State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University Beijing 100871 China State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University Beijing 100871 China

We present an analytical result for the supercurrent across a superconductor/quantum-dot/superconductor junction. By converting the current integration into a special contour integral, we can express the current as a sum of the residues of poles. These poles are real and give a natural definition of the Andreev bound states. We also use the exact result to explain some features of the supercurrent transport behavior.

关键词： supercurrent, superconductor/quantum-dot/superconductor junction

Hydrothermal Synthesis, Crystal Structure and Properties of a New Binuclear Cage-like Yttrium(Ⅲ) Complex Y(TMBA)(phen)

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Chinese Journal of Structural Chemistry 2020年第11期39卷 2016-2020页

作者： li Chang-Hong KUANG yun-Fei li Wei li yu-lin School of Materials and Chemical Engineering Hunan Institute of TechnologyHengyang 421002China School of Chemistry and Materials Science Hengyang Normal UniversityHengyang 421008China

A new binuclear cage-like yttrium(Ⅲ) complex Y2(TMBA)6(phen)2(1) with yttrium nitrate, 2,4,6-trimethylbenzoic acid(TMBA) and 1,10-phenanthroline(phen) was synthesized. It crystallizes in the triclinic space group P1 with a = 11.9086(15), b = 12.4843(17), c = 14.2101(18) ?, α = 104.977(4), β = 111.750(4), γ = 95.874(5)o, V = 1848.8(4) ?3, Dc = 1.363 g/cm3, Z = 1, μ(Mo Ka) = 1.627, F(000) = 788, the final GOOF = 1.039, R = 0.0353 and w R = 0.0826. The whole molecule consists of two yttrium ions bridged by four 2,4,6-trimethylbenzoic acid anions. The Y(Ⅲ) ion is coordinated by eight atoms to give a distorted square antiprism coordination geometry. The TG analysis and fluorescent properties of 1 were studied.

关键词： binuclear yttrium(Ⅲ)complex thermal stability fluorescent property

The first facile total synthesis of natural (3R,4R,6S)-3,4-epoxybisabola-7(14),10-dien-2-one

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Chinese Chemical Letters 2009年第9期20卷 1017-1018页

作者： Zhi Yong Tang Chen Xi Zhang li Jing Fang yu lin li State Key Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry Lanzhou University Lanzhou 730000 China

3,4-Epoxybisabola-7（14）,10-dien-2-one, a natural sesquiterpoind, was first synthesized from （-）-carvone through 7 steps, in an overall yield of 35.9%. The key step was the allylation and then a substrate-directable epoxidation was committed successfully. 2009 Zhi Yong Tang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Alkylation Epoxidation Synthesis

Hydrothermal Synthesis,Crystal Structure and Properties of a New Binuclear Nickel(Ⅲ) Complex with 3-(Pyridin-2-yl)-1,2,4-triazole

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Chinese Journal of Structural Chemistry 2021年第3期40卷 363-368,274页

作者： li Chang-Hong li yu-lin li Wei KUANG yun-Fei School of Materials and Chemical Engineering Hunan Institute of TechnologyHengyang 421002China School of Chemistry and Materials Science Hengyang Normal UniversityHengyang 421008China

A new binuclear nickel(II) complex Ni_(2)(HPT)_4(H_(2)O)_(3) (1) has been hydrothermally synthesized with nickel hydroxide,3,4-pyridine dicarboxylic acid and 3-(pyridin-2-yl)-1,2,4-triazole (HPT) in the mixed solution (the volume ratio of methanol and water is 1:4).It crystallizes in tetragonal space group P4_(2)/n,with a=20.844(1),b=20.844(1),c=7.2463(7)A,V=3148.2(5)A^(3),D_(c)=1.587 g/cm^(3),Z=4,μ(Mo Ka)=1.257,F(000)=1544,the final GOOF=1.043,R=0.0437 and w R=*** crystal structure shows that the whole molecule consists of two nickel ions which are bridged by fourμ_(2)-η^(1):η^(0-3)-(pyridin-2-yl)-1,2,4-triazole *** coordination environment of Ni(II) ion is Ni N_(6),giving a distorted octahedral *** thermal stability and fluorescent and magnetic properties of the complex were investigated.

关键词： binuclear nickel(Ⅱ)complex thermal stability fluorescent and magnetic properties

Solvothermal Synthesis,Crystal Structure and Characterization of a New Binuclear Nickel(Ⅱ)Complex with 2-(4-Methylbenzoyl)benzoic Acid

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Chinese Journal of Structural Chemistry 2021年第7期40卷 878-884,838页

作者： li Wei li Chang-Hong li yu-lin KUANG yun-Fei School of Chemistry and Materials Science Hengyang Normal UniversityHengyang 421008China School of Materials and Chemical Engineering Hunan Institute of TechnologyHengyang 421002China

A new binuclear nickel(Ⅱ)complex[Ni_(2)(MBBA)_(2)(HPT)_(2)(H_(2)O)_(2)]·2H_(2)O(1)was synthesized with nickel hydroxide,2-(4-methylbenzoyl)benzoic acid(HMBBA)and 3-(pyridin-2-yl)-1H-1,2,4-triazole(HPT).It crystallizes in the monoclinic space group P21/n with a=14.5902(13),b=8.8191(6),c=17.6120(14)Å,β=110.830(9)º,V=2118.0(3)Å^(3),M_(r)=958.26,D_(c)=1.503 g/cm^(3),Z=2,μ(MoKa)=0.959,F(000)=992,the final GOOF=1.001,R=0.0353 and wR=*** central Ni(Ⅱ)ion is coordinated by two oxygen and three nitrogen atoms,forming a distorted square pyramidal *** XRD,TG,spectrum analysis and magnetic properties of 1 were studied.

关键词： binuclear nickel(Ⅱ)complex spectrum analysis thermal stability magnetic property

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Efficient Synthesis of Octalone

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Chemical Research in Chinese Universities 2007年第3期23卷 276-279页

作者： ZHANG Chen CHEN Jin-chun ZHENG Guo-jun li yu-lin State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 P. R. China

A highly efficient and convergent approach for the synthesis of octalone 1, the focal intermediate for the synthesis of several sesquiterpenoids, was developed based on the cationic cyclization strategy of the functio... 详细信息

关键词： Octalone (± )-1β,11-Dihydroxy-△^4-eudesmol Cationic cyclization Sesquiterpenoids Total synthesis

The First Total Synthesis of Natural 6β-Cinnamoyloxy-1α- hydroxy-5, 10-bis-epi-eudesm-4-en-3-one

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Chinese Chemical Letters 2006年第10期17卷 1290-1292页

作者： Chen ZHANG Guo Jun ZHEN Jin Chun CHEN li Jing FANG yu lin li State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000

The first total synthesis of natural 6β-cinnamoyloxy-1α-hydroxy-5, 10-bis-epi- eudesm-4-en-3-one （1）, a highly complex natural eudesmane, was described.

关键词： 6β-Cinnamoyloxy-1α-hydroxy-5,10-bis-epi-eudesm-4-en-3-one C- 1 oxygenated eudesmane total synthesis.