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大环番衍生物单体5,11,17,23-四叔丁基-25,27-二酰氯基-26,28-二羟基杯[4]芳烃(DC)与哌嗪通过界面聚合,制备了聚(杯芳烃-哌嗪)酰胺(D).化合物D在乙酸乙酯溶液中形成平均直径为28和164 nm的双分布囊泡形聚集体. 2,2'-联吡啶(bpy)对化合物D的交联作用可将囊泡转变为实心无规则交联网.水将交联网转变为两相界面处存在的泡沫.这个变化过程表明,化合物D在不同的诱导条件下可调整聚集状态,多重诱因使其最终形成宏观泡沫状自组装构筑.化合物D是一个集合芳香大环-小杂环,疏水-亲水、氢键供体受体、刚性-柔性及富π空腔等多种结构及自组装于一体的高分子结构,其分子链在不同诱因下改变扭曲和取向导致超分子交联网络的形成.这种可逆宏观自组装现象为自组装机理的理解及刺激-响应材料的开发提供了一种有价值的试材. 相似文献
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从三氯均三嗪出发通过三步反应合成了4-(9-蒽基)-6-十六烷氧基-2-氨基-1,3,5-三嗪(AHTA),并通过红外、核磁、质谱、高分辨质谱对目标产物进行了表征.研究表明AHTA分子在基态下分子的蒽环与三嗪环不共平面,激发态下表现为ICT的荧光发射.由于分子间氢键作用的存在,AHTA在自组装膜和LB膜中均形成H-聚集体. 相似文献
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利用活性结构拼接原理,将高效杀螨剂吡螨胺分子的吡唑环部分引入酰基(硫)脲化合物中,以1-甲基-3-乙基-4-氯-5-甲酸基吡唑和2-氨基-4,6-二取代嘧啶为起始原料,通过多步反应合成了5种N-(4,6-二取代嘧啶-2-基)-N′-(1-甲基-3-乙基-4-氯吡唑-5-基)甲酰基脲和5个N-(4,6-二取代嘧啶-2-基)-N′-(1-甲基-3-乙基-4-氯吡唑-5-基)甲酰基硫脲化合物,其化合物结构经IR、1HNMR及元素分析测试技术确证。初步生物活性试验表明,在50mg/L质量浓度下目标化合物的杀螨活性不太理想,但有些化合物具有较好的除草活性,其中化合物Ⅰb、Ⅰc和Ⅰe对稗草主根的生长抑制率大于60%。 相似文献
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以2-(2-硝基苯基)乙腈及4,6-二甲氧基-2-甲磺酰基嘧啶为起始原料,分别经缩合、还原及酰胺化反应合成了6个未见文献报道的N-(2-(腈基(4,6-二甲氧基嘧啶-2-基)甲基)苯基)酰胺类衍生物,其结构经1H NMR、MS和元素分析进行了确证。 在150 g/hm2的用量条件下,合成化合物未显示出除草活性。 在200 mg/L浓度下,部分化合物对黄瓜灰霉病及水稻纹枯病表现出一定的抑菌作用,其中化合物4d对水稻纹枯病的抑制率为72.33%。 相似文献
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本文设计并合成了一种新型蒽衍生物蓝光材料2-叔丁基-9,10-二(9,9-二正丙基芴基)蒽.化合物中引入的柔性烷基链有效抑制了分子间的相互作用,使该化合物不易结晶,同时提高了化合物在有机溶剂中的溶解度.通过量子力学方法计算发现,化合物具有顺反两种稳定构型,分子的平面性差,能减弱分子间相互作用.化合物在二氯甲烷溶液中的最大荧光发射峰在443 nm,在环己烷溶液中测得荧光量子效率为0.78,固态薄膜的最大发射峰波长相对溶液有少量红移(450 nm).热失重和差热分析结果表明,该化合物具有较高的热稳定性,分解温度和玻璃化转变温度分别为365℃和126℃. 相似文献
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通过1,3-二(1-茚基)四甲基二硅氧烷的双锂盐与TiCl4·2THF反应制得硅桥联二(1-茚基)钛化合物(Me2SiOSiMe2)[Ind]2TiCl2(1),对其催化氢化得到相应的四氢茚基化合物(Me2SiOSiMe2)[IndH4]2TiCl2(2).对化合物1和2的单晶进行了X射线衍射结构分析,它们的晶体都属单斜晶系,P21/n空间群. 相似文献
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选择具有较强配位能力的多齿有机化合物作为桥连配体,通过与过渡金属离子自组装制备具有新型骨架结构的一维、二维、三维配位聚合物,并进一步研究其电学、磁学、光学和催化等物理和化学性质[1~4],已成为当今化学学科和材料学科中最为活跃的领域之一.含有三氮唑、咪唑等基团的有机桥联配体由于其配位能力强、配位原子数目多、易与过渡金属离子形成具有特殊结构的配位聚合物等特点[5~7],引起了人们对于该类配体的极大兴趣,成为近年来配位化学的研究热点之一.例如,Richard Robson等人合成了一个含有咪唑基团的配体一对二(咪唑基甲基)苯,并使之与Ag(Ⅰ)及Zn(Ⅱ)自组装,制备出了两个具有二维多聚轮烷结构的配位聚合物[8,9].最近,我们课题组合成了一个含有三氮唑基团的有机配体对二(1,2,4-三氮唑基甲基)苯(btx),并通过分子的自组装作用,得到了一例新的一维锯齿状的配位聚合物[HgI2(btx)]n.本文报导了该配位聚合物的晶体结构和室温下固体化合物的荧光性质,并通过元素分析、红外光谱和热分析对其进行了表征. 相似文献
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《Journal of Coordination Chemistry》2012,65(8):1411-1417
The synthesis of octakis(4,5-bis{2-[2-(1-naphthyloxy)ethoxy]ethoxy}) metal-free (4) and metallophthalocyanines (5–8) were carried out by the cyclotetramerization of a 4,5-bis{2-[2-(1-naphthyloxy)ethoxy]ethoxy}phthalonitrile (3). Newly substituted octakisphthalocyanines showed enhanced solubility in organic solvents. The new compounds were characterized by IR, 1H-NMR, 13C-NMR, UV-Vis, and MS spectral data. 相似文献
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N. A. Lobanova E. Kh. Sadykov V. K. Stankevich 《Russian Journal of Organic Chemistry》2016,52(4):553-557
Reactions of 2-{[2-(ethenyloxy)ethoxy]methyl}oxirane with N-unsubstituted oxazolidin-2-ones give mixtures of isomeric 3-{3-[2-(ethenyloxy)ethoxy]-2-hydroxypropyl}- and 5-{[2-(ethenyloxy)ethoxy]- methyl}-3-(2-hydroxyalkyl)oxazolidin-2-ones. If the initial oxazolidin-2-one contains two alkyl groups on C4, 3-{3-[2-(ethenyloxy)ethoxy]-2-hydroxypropyl}oxazolidin-2-ones are selectively formed. 相似文献
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B. F. Kukharev V. K. Stankevich G. R. Klimenko V. A. Kukhareva E. V. Bragin 《Russian Journal of Organic Chemistry》2008,44(10):1494-1496
Base-catalyzed reaction of 2-hydroxybenzaldehyde with 2-{[2-(vinyloxy)ethoxy]methyl}oxirane gave 2-{2-hydroxy-3-[2-(vinyloxy)ethoxy]propoxy}benzaldehyde in 42% yield, and subsequent condensations of the product with thiosemicarbazide and primary aliphatic amines afforded the corresponding thiosemicarbazone (yield 86%) and 1-{2-[(alkylimino)methyl]phenoxy}-3-[2-(vinyloxy)ethoxy]propan-2-ols (74–81%). 相似文献
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M. S. Novikov A. A. Ozerov Yu. A. Orlova R. W. Buckheit 《Chemistry of Heterocyclic Compounds》2005,41(5):625-629
The synthesis of novel 1-{[2-(phenoxy)ethoxy]methyl}uracil derivatives with different substituents in positions and 6 of the pyrimidine ring has been carried out. It has been shown that the alkylation of trimethylsilyl derivatives of uracil with 2-(4-chlorophenoxy)- and 2-(4-methylphenoxy)ethoxymethyl chloride under Hilbert-Johnson reaction conditions gives N(1)-substitution products. It was found that the 1-{ [2-(phenoxy)ethoxy]methyl}uracil derivatives show viral inhibition properties relative to human immunodeficiency type 1 virus in vitro. The most active compounds are 5-bromo-6-methyluracil derivatives which suppress viral reproduction by 50% at 7.2 and 7.8 micromolar concentrations.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 726–731, May, 2005. 相似文献
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The preparation of a number of 5-substituted 1-[2-(trimethylsilyl)ethoxy]methyl-1H-1,2,3-triazoles via reaction of 1-[2-(trimethylsilyl)ethoxy]methyl-1H-1,2,3-triazole with n-butyllithium followed by addition of various electrophiles is reported. Removal of the protecting group by action of diluted aqueous hydrochloric acid or by tetrabutylammonium fluoride in tetrahydrofuran leads to the appropriate 4-substituted 1H-1,2,3-triazoles. 相似文献
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The crystal, molecular structure of {1'2-bis[2-(o-hydroxyphenoxy)ethoxy]ethane}bis(iso-thiocyanato)calcium was studied by single crystal X-ray diffraction. The compound is a host-guest complex.In the molecule of this complex, the podand is wrapped around the Ca2
+ cation (CN 8), which is coordi- nated with all the six oxygen atoms of the podand and with two nitrogen atoms of two SCN- ligands. The geometric parameters and crystal packing of the complex were determined. The molecules in the crystal are linked by O-H···S hydrogen bonds to form three-dimensional layers. 相似文献
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E. S. Krivorot’ko I. N. Polyakova I. S. Ivanova E. N. Pyatova V. E. Baulin E. N. Galkina A. V. Dorokhov A. Yu. Tsivadze 《Russian Journal of Inorganic Chemistry》2016,61(10):1241-1251
Potentially hexadentate phosphoryl podands 1,2-bis[2-((2-diphenylphosphorylmethyl)phenoxy) ethoxy]cyclohexane (L), 1,2-bis[2-((2-diphenylphosphoryl)phenoxy)ethoxy]cyclohexane (L1), and 1,2-bis[2-((2-diphenylphosphorylmethyl)phenoxy)ethoxy]benzene (L2) are synthesized. Stability constants of complexes formed by L, L1, and L2 with alkali-metal 2,4-dinitrophenolates in mixed THF—CHCl3 solutions (4: 1 by volume) are determined. Electroanalytical characteristics of ion-selective electrodes with hexadentate phosphoryl podands having different structures used as active components of their plasticized membranes are compared for cations of alkali and alkaline-earth metals. The IR spectra are described. The crystal structure of L is studied by X-ray diffraction. 相似文献
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The synthesis of novel metal-free and metallophthalocyanines [Ni(II), Zn(II), Co(II), Cu(II)] were prepared by cyclotetramerization of a novel 4-{2-[2-(1-naphthyloxy)ethoxy]ethoxy}phthalonitrile and the corresponding metal salts (NiCl2, Zn(CH3COO)2, CoCl2 and CuCl2). The structures of the target compounds were confirmed using elemental analysis, IR, 1H NMR, 13C NMR, UV–Vis and MS spectral data. Voltammetric and in situ spectroelectrochemical measurements show that while cobalt phthalocyanine complex gives both metal-based and ring-based redox processes, metal-free, and zinc phthalocyanines show only ring-based reduction and oxidation processes. All complexes decomposed and coated on the electrode as nonconductive film at positive potential window of the electrolyte. An in situ electrocolorimetric method has been applied to investigate color of the electro-generated anionic and cationic forms of the complexes. 相似文献
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Donald P. Matthews Jeffrey P. Whitten James R. Mccarthy 《Journal of heterocyclic chemistry》1987,24(3):689-692
2,2′-Bi-1H-imidazole, when protected with the [2-(trimethylsilyl)ethoxy]methyl (SEM) blocking group, on treatment with N-bromosuccinimide or N-chlorosuccinimide yields predominantly the monohalogenated derivatives 4a and 4b. The [2-(trimethylsilyl)ethoxy]methyl group is subsequently removed to yield pure mono-halo-2,2′-bi-H-imidazoles 2 . 相似文献
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J Sakaguchi H Nishino N Ogawa Y Iwanaga S Yasuda H Kato Y Ito 《Chemical & pharmaceutical bulletin》1992,40(1):202-211
Novel N-[[dialkylamino)ethoxy]benzyl]benzamide derivatives (II-1-51), derived from the structural modification of metoclopramide (I), were synthesized and examined for their pharmacological activities. Among them, N-[4-[2-(dimethylamino)ethoxy]benzyl]-3,4-dimethoxybenzamide (II-34) which exhibited well balanced gastrointestinal prokinetic and antiemetic activities was selected as a new type of gastrointestinal prokinetic agent. 相似文献