新型咔唑三吡啶衍生物的合成及其光学性质

以咔唑为原料,合成了一种新型的咔唑类衍生物:N-己基-3,6-二{2-[4-(2,2′∶6′,2″-联三吡啶)-4′-基)苯基]乙烯基}咔唑(1),其结构经1HNMR,13CNMR和IR表征。紫外光谱和单光子荧光光谱研究结果表明,1在乙醇中的荧光量子产率为0.88(罗丹明B乙醇溶液为参比)。     

新型吡唑基咔唑衍生物的合成及其光学性质

以咔唑为原料,合成了一种新型的咔唑衍生物--9-丁基-3,6-二[3'-(5'-三氟甲基)吡唑基]咔唑(4),其结构经1H NMR,IR和MS表征.运用UV和单光子荧光光谱研究了中间体和4的光学性质,结果表明:4有望成为具有应用价值的发光材料.     

咔唑及其衍生物合成方法研究进展

咔唑及其衍生物是一类重要的含氮芳杂环化合物,具有许多独特的理化性质及生物活性,分析、归纳、总结了近5年来发表的文献,选取具有代表性的实例,并按照中间体的不同将合成方法分为四类,分别讨论了咔唑及其衍生物合成方法的进展情况,对咔唑及其衍生物成环的新方法给予重点关注.     

新型三唑基咔唑衍生物的合成及其光学性质

合成了一种新型的三唑基咔唑衍生物--3,6-二(1,2,4-三唑)-N-己基咔唑(4),其结构经1H NMR, IR和MS表征.利用UV,单光子荧光光谱和固体荧光光谱研究了4的线性光学性质,结果表明4有望成为具有应用价值的发光材料.     

两种新型咔唑衍生物的合成及其光电性能

以咔唑、三苯基氯硅烷及2-溴芴为原料,经甲基化、硼酸化、Ullmann偶联、Suzuki偶联等反应合成了两种新型咔唑衍生物--3,6-二(9,9-二甲基-9H-2-芴基)-9-苯基-9H-咔唑(1a)和3,6-二[(4-三苯硅基)苯基]-9-苯基-9H-咔唑(1b),其结构经1H NMR和元素分析表征.用UV-Vis,荧光光谱和循环伏安曲线研究了1a和1b的光电性能.     

咔唑双乙酰化衍生物的合成及其电子光谱

以咔唑为原料,通过SN1亲核取代和Friedel-Crafts亲电取代反应合成了咔唑双乙酰化衍生物——3,6-二乙酰基-N-乙基咔唑和3,6-二乙酰基-N-丁基咔唑,其结构经1H NMR,IR,MS和元素分析表征,并讨论了它们的电子吸收光谱。     

两种新型双咔唑基席夫碱衍生物的合成及其光学性质

以N-乙基-3-甲酰基咔唑为原料,合成了两种新型的双咔唑基席夫碱衍生物——N1,N2-双(9-乙基咔唑-3-亚甲基)-1,2-乙二胺(1)和N1,N3-双(9-乙基咔唑-3-亚甲基)-1,3-丙二胺(2),其结构经1HNMR,IR和MS表征。用UV和单光子荧光光谱研究了1和2的线性光学性质。结果表明:1和2有望成为具有应用价值的发光材料。     

一种新型长共轭结构咔唑衍生物的合成及其光学性质

以咔唑、N,N-二甲基甲酰氨、溴丁烷和对甲基苯乙烯为原料,经Wittig反应和Heck反应合成了一种新型的长共轭结构的咔唑衍生物——3-[(对甲基苯乙烯基)苯乙烯基]-N-丁基咔唑(4),其结构经1H NMR,IR和元素分析表征。用UV-Vis和荧光光谱初步探讨了4的光学性质,结果表明,4具有良好的光学性质。     

N-乙基咔唑甲酰化衍生物的合成

以咔唑为原料,经烷基化和甲酰化反应合成了3-甲酰基-N-乙基咔唑和3,6-二甲酰基-N-乙基咔唑,其结构经1H NMR, IR和MS表征.重点研究了反应条件对甲酰化反应的影响.研究结果表明,甲酰化反应的较适宜条件为: 1 10 mmol, n(DMF) : n(1)=10 : 1, 1,2-二氯乙烷(25 mL)为溶剂,回流反应8 h～48 h.通过选择适当的反应条件,可以提高产率以及控制单乙酰化和双乙酰化产物的选择性.     

新型咔唑取代乙炔化合物的合成

分别以咔唑和2-羟基咔唑为原料,通过Sonagashira偶联反应和N-烷基化反应合成了6个新型的咔唑取代乙炔化合物:2-乙炔基-9-苄基咔唑,2-乙炔基-9-正丁基咔唑,2-乙炔基-9-正己基咔唑,3-乙炔基-9-苄基咔唑,3-乙炔基-9-正丁基咔唑和3-乙炔基-9-{4·[4·(硝基)苯基偶氮苯]氧}亚丁基咔唑,其...     

Synthesis,Characterization, and Crystal Structure of One Novel Indolo[3,2-b]carbazole Derivative

Indolocarbazole derivatives have been reported to be promising organic semicon- ductor candidates and electroluminescent （EL） materials. One novel indolocarbazole derivative, 2,8-acetyl-5,11-dihexyl-6,12-（di-p-tolyl）-5,11-indolo[3,2-b]carbazole （YK4）, has been synthesized, and its crystal structure has also been carefully studied. YK4 is triclinic, space groups Pi with a = 9.409（5）, b = 13.974（5）, c = 15.488（5） A, α = 90.281（5）, β = 105.456（5）, Z= 93.728（5）°, M,. = 688.94, V= 1958.1（14） A3, Z = 2, Dc.= 1.168 g/cm-3,μ = 0.070 mm-1, F（000） = 740, Rint = 0.0475, R （I〉 20（/）） = 0.1146, wR （I〉 20（/）） = 0.2186, R（all data） = 0.2192 and wR （all data） = 0.2701. Like other indolo[3, 2-b]carbazole derivatives which were introduced in the 5- and 11-positions, the intermolecular short contacts are localized between the pendant groups and acetyl groups of the neighboring indolocarbazole molecules. The molecule of YK4 possesses poor face-to-face π-π stacking between two adjacent molecules in the crystal. The calculated bond lengths and bond angles of YK4 also proved the result of crystallography.     

多叠氮基三唑类高氮化合物的合成与晶体结构

2,5,2'-三氯-1,1'-偶氮-1,3,4-三唑(1)与叠氮化钠反应首次合成含有多叠氮和四氮烯(N—N＝N—N)结构的高氮化合物2,5,2'-三叠氮-1,1'-偶氮-1,3,4-三唑(3). 在相同条件, 2,5,2',5'-四氯-1,1'-偶氮-1,3,4-三唑(2)与叠氮化钠反应没有得到2,5,2',5'-四叠氮-1,1'-偶氮-1,3,4-三唑(b), 而是得到其分解产物3,5-二叠氮基-1,2,4-三唑(4). 用X 射线单晶衍射测定了化合物3和4的晶体结构. 晶体2b通过分子间氢键的相互作用形成具有9元环的三聚体,并由于三唑环共轭体系使氮上的H原子具有酸性,从而导致互变现象发生.     

Synthesis and Supramolecular Structure of a Novel :r-Extended TTF Derivative

A novel x-extended TTF derivative (C24H20N6S8, Mr=649.02) has been synthesized and characterized by IR,1H NMR and MS. The crystal structure was prepared by crystallization from CH2Cl2-MeOH. The crystal belongs to the monoclinic system, space group P21/c with a=5.465(5), b=26.835(5), c=10.180(5) A, β=101.929(5)°, V=1460.7(15) A3, Z=2, Dc=1.476 g/cm3,F(000)=668,μ=0.638 mm-1, the final R=0.0390 and wR=0.0586 for 1694 observed reflections with I > 2σ(I). The structure reveals planarity of the two dithiole tings, different from the boat-shaped structure usually found in neutral derivatives of TTF. The central ring of the benzene also adopts a planar conformation, while it is twisted from planarity of the two dithiole rings and forms a dihedral angle of 61.8°. The molecule exhibits a three-dimensional supramolecular architecture constructed through hydrogen bonds. In the molecular structure a noticeable feature can be found that there exist S…S interactions which further reinforce the 3D supramolecular framework.     

Synthesis and Crystal Structure of a New Adamantane Amide Derivative

A novel adamantane acyl amide derivative containing two phthalimido pendant groups(C31H31N3O5) has been synthesized,and its structure was characterized by elemental analysis,IR,1 H NMR spectra,and single-crystal X-ray diffraction.The crystal belongs to triclinic,space group P1 with a=7.3158(10),b=13.2405(18),c=14.378(2),α=72.419(2),β=84.496(2),γ=81.799(2)o,V=1312.0(3)3,Z=2,Dc=1.330 g/cm 3,μ=0.09 mm-1,Mr=525.59,F(000)=556,S=1.001,R=0.0523 and wR=0.0707 for 5901 unique reflections with 2363 observed ones(I>2σ(I)).π-π stacking interactions(offset face-to-face) exist between the two rings of phthalimides from the neighboring molecules in the title crystal structure.The intermolecular dihedral angle between the two rings of neighboring phthalic amides is 6.26° and the distance is 4.008.     

Synthesis, Crystal Structure and Electrochemical Properties of a Novel Phenothiazine Derivative

A new compound 1,1‘-bis(3-pyridyl)-propylene(3,7-diformyl-N-ethylphenothiazinyl)ketone (C30H23N3O2S, Mr = 489.4) has been synthesized, and its crystal structure was determined by single-crystal X-ray diffraction method. The crystal is of orthorhombic, space group Ima2 with a = 27.491 (5), b = 11.942(2), c = 7.389(2) A, V = 2425.8(7) A^3, Z = 8, Dc =1.340 g/cm^3,μ = 0,167 mm ^1, F(000) = 1024, the final R = 0.0363 and wR = 0.0869 for 2054 unique reflections with Rint = 0.0254. The structural determination shows that the molecule assumes a butterfly configuration with nearly planar wings. In addition, the electrochemical study indicates that there is a high electronic delocalization in the molecule.     

Synthesis and Crystal Structure of a 3-Arylamino-3-Deoxy Sugar Derivative

1INTRODUCTION Amino sugars in which a hydroxyl group of a mo-nosaccharide is replaced by an amino group play a wide variety of important biological roles[1]and have broad applications in chemical,biochemical,medi-cinal,and pharmaceutical fields[2,3].Amino sugars are chiral synthon of azasugar and polyose,many of which are found to be potential chemotherapeutic agents for the treatment of diseases,such as diabetes and cancer,inflammation and viral infections,inclu-ding HIV[4].Particularly…     

Synthesis and Crystal Structure of1,4-Bis（1H-1,2,4-triazol-1-methyl）benzene

1 INTRODUCTION 1,2,4-Triazole derivatives are used as ingradients in several antiallergic, antivirial, antibacterial drugs, etc.[1～4]. 1,2,4-Triazole and its derivatives are also very interesting ligands because they combine the coordination geometry of…     

Facile Synthesis and Crystal Structure of a Novel Cyanopyridine

The title compound 2-amino-4-(4-hydroxy-3,5-dimethoxyphenyl)-5-methyl-6-phenyl nicotinonitrile,C 21 H 19 N 3 O 3,was synthesized via four-component reactions between propio-phenone,malononitrile,syringaldehyde and ammonium acetate in ethanol under reflux without catalyst and characterized by IR,1 H NMR,13 C NMR,MS,EA and single-crystal X-ray diffraction.Single-crystal X-ray diffraction analysis shows that the compound is of monoclinic system,space group P2 1 /n with a=8.4600(17),b=17.139(3),c=13.408(3),β=107.06(3)°,V=1858.6(6)3,Z=4,M r=361.39,F(000)=760,μ(MoKα)=0.088 mm-1,D c=1.292 g/cm 3,λ=0.71073,the final R=0.0751 and wR=0.0938 for 3333 observed reflections with I > 2σ(I).The crystal packing of the title compound is stabilized by intermolecular hydrogen bonds.     

新型镍配合物的溶剂热合成及其晶体结构

以2-乙氧基-6-亚氨甲基苯酚(HL)为配体,与氨水和Ni(ClO4)2.6H2O经溶剂热法合成了新型镍配合物[Ni(L)2](1),其结构经IR,元素分析和XRD表征。1属三斜晶系,Pī空间群,晶胞参数a=0.843 3(3)nm,b=1.009 4(2)nm,c=1.188 4(2)nm,α=111.16(3)°,β=97.43(3)°,γ=102.43(3)°,V=0.897 2(11)nm3,Mr=387.05,Z=2,Dc=1 433 g.cm-3,F(000)=404,μ=1.105 mm-1,S=1.015。1中Ni2-分别与两个L-上的两个N原子和两个O原子配位,形成了平面四边形几何构型。分子通过一对N-H┈O氢键形成二聚体;二聚体进一步通过N-H┈O氢键和C-H┈Ni氢键的相互作用形成二维网状结构。