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First Asymmetry Synthesis and Stereochemistry of Glutinone
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作者 Zhe ZHANG Zhao Ming XIONG +2 位作者 Yu Kun GUAN Guo Jun ZHENG Yu Lin LI 《Chinese Chemical Letters》 SCIE CAS CSCD 2001年第10期881-882,共2页
The first asymmetry synthesis of glutinone and its three diastereoisomers were carried out in 8 steps and the stereochemistry of this natural product was given out.
关键词 asymmetry synthesis asymmetry dihydroxylation SESQUITERPENOID
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Structure and Optical Property of a New 1D Iodoplumbate Hybrid Directed by in situ Synthesized Asymmetrical N-benzyl-1,4-diazabicyclo[2.2.2]octane
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作者 武国兴 王中慧 李旭鹏 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第3期475-480,共6页
Simple solvothermal reaction of PbI2,1,4-diazabicyclo[2.2.2]octane and benzyl alcohol in the presence of HI acid creates a new organically templated iodoplumbate hybrid:[(N-Bz-DABCO)(PbI3)]n(1,N-Bz-DABCO+ = N-b... Simple solvothermal reaction of PbI2,1,4-diazabicyclo[2.2.2]octane and benzyl alcohol in the presence of HI acid creates a new organically templated iodoplumbate hybrid:[(N-Bz-DABCO)(PbI3)]n(1,N-Bz-DABCO+ = N-benzyl-1,4-diazabicyclo[2.2.2]octane).Compound 1 crystallizes in orthorhombic space group P212121 with a = 20.044(9),b = 8.002(3),c = 12.345(5) ?,V = 1980.1(14) A3,Z = 4,C(13)H(19)N2PbI3,Mr = 791.19,Dc = 2.654 g/cm^3,F(000) = 1408,μ(Mo Kα) = 13.189 mm–1,the final R = 0.0303 and w R = 0.0849 for 3777 observed reflections(I 〉 2σ(I)).Compound 1 contains one-dimensional anionic [PbI3]nn-chains that are enclosed into the cationic channel formed from the N-benzyl-1,4-diazabicyclo[2.2.2]octane.Noteworthy,compared with common symmetrical N,N?-dialkyl-DABCO^(2+) cations,in-situ formed asymmetrical N-monoalkyl-DABCO~+ cation is first used as structure directing agents/templating agents in the haloplumbate system,finally leading to the occurrence of noncentrosymmetric feature in compound 1.In addition,UV-Vis absorption spectrum analysis reveals that compound 1 is a potential semiconductor material with energy gap of 2.80 eV. 展开更多
关键词 iodoplunbate hybrid template synthesis asymmetry semiconductor material
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