微波催化合成N-(2-吡啶基)邻苯二甲酰亚胺的研究

用微波催化法制备N-(2-吡啶基)邻苯二甲酰亚胺,考察了功率、时间、反应物料配比,溶剂等参数,得到优化工艺参数为:以N,N-二甲基甲酰胺为溶剂:功率5.0W,物料比n(2-氨基吡啶)∶n(邻苯二甲酸酐)=1∶1.2,反应时间6min,收率91.3%;无溶剂时:功率5.0W,物料比n(2-氨基吡啶)∶n(邻苯二甲酸酐)=1∶1.2,反应时间8min,收率:85.5%。微波催化法具有环保、时间短、收率高、后处理简单等优势。     

甲基丙烯酸乙基咔唑酯的合成与表征

以新型光电材料的一种原料羟乙基咔唑和甲基丙烯酸甲酯为原料,对甲苯磺酸为催化剂,对苯二酚为阻聚剂,采用酯交换法合成甲基丙烯酸乙基咔唑酯。采用紫外光谱(UV-vis)傅立叶变换红外光谱(FT-IR)对产物的结构进行了表征。     

Valine-Coated Magnetic Nanoparticles: Synthesis,Characterization, and Application in Removal of Cd(II) Ions from Aqueous Solution

A novel Valine coated magnetic nano-particles (MNPs-Val) has been synthesized for the removal of Cd(II) ions from aqueous solution. The MNPs-Val were developed by electrostatic attraction of valine (C₅H₁₁NO₂) on the bare surface of Fe₃O₄ nanoparticles and characterized by using FT-IR, XRD, SEM, and TEM analysis. The morphology and average particles size 15-27 nm of MNPs-Val were analyzed by SEM and TEM. The coated MNPs were applied for adsorptive removal of Cd(II) ions from aqueous solutions. Factors affecting the adsorption of Cd(II) ions on the MNPs-Val surface such as the pH, temperature, adsorbent dosage, and contact time were investigated which have significant effect on the metal ion removal. The Cd(II) ions adsorption equilibrium on the MNPs-Val could be achieved in 35 min at the optimized pH 5 and follow the pseudo-second order kinetics model. The experimental data for the adsorption of Cd(II) was followed by the Langmuir isotherm and the maximum adsorption capacity was obtained at 0.2 g L^?1 adsorbent dose at 308 K.     

N-[4-(间甲基苯甲酰基哌嗪)乙酰基]-N-甲基-3-(1-萘氧基)-3-(2-噻吩基)-丙胺的合成

以N-甲基-3-(1-萘氧基)-3-(2-噻吩基)-丙胺(Duloxetine)为原料,合成了标题化合物.中间体和产物的结构经 ~1HNMR、IR和质谱表征.     

邻氯乙酰氨基酚合成工艺的研究与表征

以氯乙酰氯为酰化剂,与邻氨基酚在溶剂—氯乙烷中合成了邻氯乙酰氨基酚,产率最高可达90%。分析了反应条件的改变对产物产率的影响。通过正交实验和规律性实验确定了最佳合成工艺:邻氨基酚、氯乙酰氯与溶剂的摩尔比为1∶2∶10,反应温度82°C,反应时间3 h。同时还对所合成的产物进行元素分析、质谱分析、红外光谱分析以及核磁共振氢谱分析,确定所合成的产物即是目的产物。     

2-(2-吡啶)-5,6,7,8-四氢吡啶并[4,3-d]嘧啶及其衍生物的合成

以N-叔丁氧羰基-4-哌啶酮为原料,设计合成了一种新型的2-(2-吡啶)-5,6,7,8-四氢吡啶并[4,3-d]嘧啶及其3种衍生物,通过~1HNMR、LC-MS和HPLC确证了3种衍生物的结构。实验证明,所合成的3种衍生物能够高效抑制白血病K562细胞系的增殖,同时能够有效抑制卵巢癌HO-8910细胞的增殖。     

6-(呋喃-2-亚甲氨基)-2-甲基-1H-吲哚-3-羧酸乙酯的合成、表征与生物活性研究

以2,4-二硝基氯苯为原料,经过3步反应得到标题化合物。当温度为78℃,反应时间为8.5 h,目标化合物的收率可达65%。通过IR、1HNMR、13CNMR和MS光谱技术对其结构进行表征。运用SRB法评价了目标化合物对人体肺癌细胞的生长抑制活性。初步的生物实验表明,该化合物对癌细胞H1792、A549、H157和Calu-1具有生长抑制作用,且具有浓度依赖性。细胞周期分析发现其能诱导Calu-1细胞凋亡。     

5-(3,5-二硝基苯-1-基)-四唑的合成与表征

以3,5-二硝基苯甲酰胺为起始原料,经氨化、脱水及环化反应合成了未见文献报道的化合物5-(3,5-二硝基苯-1-基)-四唑,收率66.1%,经IR,NMR,MS及元素分析确认了其结构。探讨了锌盐催化的四唑环合成机理,并确定了适宜的反应条件:反应时间4 h,ZnCl2.2H2O为催化剂,ZnCl2.2H2O∶DNBT=0.5∶1(摩尔比)。采用DSC法研究了DNBT的热行为,DNBT熔点为175.1℃,分解点为250.1℃。结果表明,DNBT有较好的耐热性。     

硫氰酸锰及其相关衍生物的合成及化学表征

合成了金属有机配合物非线性光学晶体硫氰酸汞锰，及其相关衍生物，二二甲亚砜合硫氰酸汞锰，乙二醇一甲醚合硫氰酸汞锰，二水合二N，N－二甲基乙酰胺合硫氰酸汞锰，二水合二N－甲基－α－吡咯烷酮合硫氰酸汞锰。采用元素分析，红外光谱以及紫外－可见－近红外透央求我谱分析对其进行了化学表征。     

1-(2-吡啶偶氮)-2-萘酚修饰玻碳电极的制备及其电化学行为

研究了将1-(2-吡啶偶氮)-2-萘酚(PAN)固定于玻碳电极上的方法。将玻碳电极进行抛光处理并经超声波清洗后,于磷酸盐缓冲溶液中用循环伏安法扫描,可将PAN固定于玻碳电极上,制得具有良好电化学活性且较为稳定的修饰电极。制备好的电极在磷酸盐缓冲溶液中的循环伏安曲线有一对氧化还原峰。峰电流随扫描速度的增大而增大,峰电位随pH的升高而减小,在pH 1.0~8.0间有良好的线性关系。     

4-(水杨醛氧基)邻苯二甲腈的合成及其表征

以4-硝基邻苯二甲腈和水杨醛为原料,在无水碳酸钾的催化下合成了一种新的酞菁前驱体4-(水杨醛氧基)邻苯二甲腈。产物经IR、UV-Vis、^1HNMR及MS表征确认了其结构,同时对该物质的最佳合成条件进行了优化,产率达94．3％。     

邻、间、对双胍基苯甲酸盐酸盐的制备及其结构表征

以邻、间、对氨基苯甲酸为起始原料,在盐酸存在下分别与双氰胺一步合成了中间体邻、间、对双胍基苯甲酸盐酸盐.采用红外光谱、紫外光谱、核磁共振氢谱对目标产物进行了结构表征.     

Synthesis of poly-(BA-co-MMA) latexes filled with SiO2 for coating in construction applications

The synthesis of acrylic latexes filled with silica nanoparticles have been developed in the present work. Moreover, a exhaustive study of the influence of the synthesis conditions on the latex characteristics has been performed. The latex particles morphology has been observed using transmission electron microscopy (TEM) showing a raspberry morphology. Completely transparent coatings have been synthesized using these latexes and a high dispersion degree of the nanosize SiO₂ into the polymer matrix has been achieved. These characteristics of these latexes make especially suitable for construction applications (i.e., to protect natural stone). Nanoindentation tests have been carried out in order to measure the mechanical properties of the coating. These tests showed an increment of the elastic modulus and hardness, improving mechanical properties when SiO₂ is added to the polymer matrix.     

2-[(1-羟基-2-萘基)羰基]苯甲酸的合成与表征

以苯酐和-α萘酚为原料,在B2O3催化下合成了2-[(1-羟基-2-萘基)羰基]苯甲酸,反应的优化条件为:n(B2O3)∶n(苯酐)∶n(-α萘酚)=1.5∶1.5∶1,反应温度为180￣190℃,反应时间为2.0h,收率达97.8%,并通过元素分析、1H NMR、IR、EIMS对产物结构进行了表征。     

1-(4-烯丙氧基-1,6-庚二烯-4-基)-4-甲氧基苯的合成与表征

以尼泊金甲酯为初始原料,经甲基化、格氏试剂加成和醚化3步反应,设计合成了新型AB_3型树枝状标题化合物,利用红外光谱、核磁共振氢谱和元素分析对其结构进行了表征。对影响醚化反应的条件进行了优化,确定了最优反应条件:氢化钠为碱、四氢呋喃为溶剂、反应温度为65℃、反应时间为4 h,收率可达95%。     

TRFIA螯合剂中间体2,6-二(3′-溴甲基-1′-吡唑基)-4-溴吡啶的合成、分离与表征

以2,6-二（3-甲基-1-H-吡唑基）-4-溴吡啶为原料,经重氮化、溴化合成了新型时间分辨荧光免疫分析（TR-FIA）双功能螯合剂中间体2,6-二（3＇-溴甲基-1＇-吡唑基）-4-溴吡啶,通过IR、GC-MS1、HNMR和元素分析等对其结构进行了确认,探讨了合成条件及反应机理。同时,通过GC-MS1、HNMR和元素分析等对第一副产物4-溴-2-（3＇-溴甲基-1＇-吡唑基）-6-（3＇-甲基-1＇-吡唑基）吡啶的结构也进行了确认,以其为原料可继续合成目标化合物,大幅提高总产率。     

IrO2-SiO2 binary oxide films: Preparation, physiochemical characterization and their electrochemical properties

Mixed IrO₂-SiO₂ oxide films were prepared on titanium substrate by the thermo-decomposition of hexachloroiridate (H₂IrCl₆) and tetraethoxysilane (TEOS) mixed precursors in organic solvents. The solution chemistry and thermal decomposition kinetics of the mixed precursors were investigated by ultra violet/visible (UV/vis) spectroscopy and thermogravimetry (TGA) and differential thermal analysis (DTA), respectively. The physiochemical characterization of the resulting materials was conducted by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements. It is shown from the UV/vis spectra that the electronic absorption intensity of IrCl₆²⁻ complexes in the precursors decreases in the presence of TEOS, indicating the interaction between these two components. Thermal analysis shows the decomposition reaction of H₂IrCl₆ is inhibited by TEOS in the low temperature range, but the further oxidation reaction at high temperatures of formed intermediates is independent of the presence of silane component. Physical measurements show a restriction effect of silica on the crystallization and crystal growth processes of IrO₂, leading to the formation of finer oxide particles and the porous morphology of the binary oxide films. The porous composite films exhibit high apparent electrocatalytic activity toward the oxygen evolution reaction. In addition, the long-term stability of Ti-supported IrO₂ electrodes is found to apparently improve with appropriate amount of SiO₂ incorporation, as tested under galvanostatic electrolysis.     

Synthesis,characterization and antibacterial activity of Pd(II), Pt(II) and Ag(I) complexes of 4-ethyl and 4-(p-tolyl)-1-(pyridin-2-yl)thiosemicarbazides

Pd(II), Pt(II) and Ag(I) ions were found to form stable complexes with 4-(p-tolyl)- or 4-ethyl-1-(pyridin-2-yl)thiosemicarbazides (Hp-TPTS or HEPTS). The complex structure was elucidated by analysis (elemental and thermal), spectroscopy (electronic, IR and ¹H NMR spectra) and physical measurements (magnetic susceptibility and molar conductance). The ligands coordinate to the metal ions as monobasic bidentate through nitrogen and sulfur atoms. The electronic spectra of the Pt(II) complexes in DMF showed a metal to ligand charge transfer transition at 11,935–13,260 cm^?1. The structural, electronic and vibrational features of HEPTS and Hp?TPTS were discussed on the basis of semi-empirical quantum mechanic calculations [ZINDO/S and semi-empirical parameterization (PM3)]. The simulated IR and electronic spectra are found reasonable in accordance with the experimental data. Finally, the antibacterial activities of the ligands and their complexes were investigated and some were found promising.     

2-(2-咪唑基)-(4-正丁氧基)苯甲酰苯胺的合成工艺改进

2-(2-咪唑基)-(4-正丁氧基)苯甲酰苯胺具有潜在的抗肿瘤效应。本文通过改进合成路径,经过关环反应、还原反应以及酰化反应,成功合成了化合物2-(2-咪唑基)-(4-正丁氧基)苯甲酰苯胺(6),六步反应总收率达到30%,且各步反应都能放量反应,反应中间体及目标化合物结构经MS、1H NMR、13C NMR确证。     

Coordination Polymers of 1,9-Bis(8-Hydroxyquinolin-5-yl)-2,5,8-Trioxanonane

ABSTRACT

Coordination polymers of a novel bis(oxine) bidentate ligand, namely 1,9-bis(8-hydroxyquinolin-5-yl)-2,5,8-trioxanonane (BHQTN) (H₂L) have been prepared with the metal ions Zn⁺², Cu⁺², Ni⁺², Co⁺², and Mn⁺². The novel bis(bidentate) ligand BHQTN was synthesized by condensation of 5-chloromethyl-8-hydroxyquinoline hydrochloride with diethylene glycol in the presence of a base catalyst. All of these coordination polymers and the parent ligand were characterized by elemental analyses and IR spectral studies. The diffuse reflectance spectral studies and magnetic susceptibilities of all of the coordination polymers have also been performed. Thermogravimetric parameters such as T_o, T₁₀, T_max., IPDT, and the activation energy of the thermo-degradation process were calculated.