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| 1 | 聚乙烯基胺包裹Fe_3O_4@SiO_2磁性微球用于Knoevenagel缩合(英文)显示文摘Polyvinyl amine coated Fe3O4@SiO2 composite microspheres with a core‐shell structure were prepared and employed as a magnetic catalyst for Knoevenagel condensation under mild conditions. The catalyst can be readily recovered using a magnet and reused several times without loss in activity or selectivity. The performance of the magnetic base catalyst was compared with that of polyvinyl amine functionalized mesoporous SBA‐15, which showed that the magnetic nanoparticles gave improved reaction rate and yield. | Farzad Zamani Elham Izadi | 2014 | 催化学报2014，35，1： | 7 |
| 2 | Synthesis of 2,3-dihydroquinazolin-4(1H)-ones catalyzed by a-chymotrypsin显示文摘We discovered that a-chymotrypsin has a promiscuous ability to catalyze the cyclocondensation of aromatic and aliphatic aldehydes with 2-aminobenzamides to afford the corresponding 2,3-dihydroquinazolin-4(1H)-ones successfully in high yields(90%–98%) under alcohol solvent. The catalytic activity of a-chymotrypsin was evaluated through investigating the temperature, the enzyme loading and the ratio of substrates in the enzyme-catalyzed reactions. The present method proves to be efficient and environmentally friendly in terms of short reaction time, high yield, green catalyst and the clean products obtained without further purification processes. | Shi-Guo Zhang Zong-Bo Xie Lian-Sheng Liu Meng Liang Zhang-Gao Le | 2017 | Chinese Chemical Letters2017，28，1： | 2 |
| 3 | Highly efficient and magnetically separable nano-CuFe_2O_4 catalyzed S-arylation of thiourea by aryl/heteroaryl halides显示文摘The non-toxic and magnetically separable nano-CuFe_2O_4 catalyzed synthesis of symmetrical aryl sulfides by the reaction of thiourea with a wide variety of aryl halides,including aryl chlorides has been reported.Excellent yields of products have been obtained under ligand-free conditions and without the use of any expensive catalyst,such as palladium. | Abdol R.Hajipour Morteza Karimzadeh Ghobad Azizi | 2014 | Chinese Chemical Letters2014，25，10： | 1 |
| 4 | 中孔MCM-41锚合Zr(Ⅳ)-salen催化剂制备及用于硫化物氧化制亚砜和Knoevenagel缩合反应(英文)显示文摘通过NH2-MCM-41与水杨醛反应得到席夫碱配体,然后加入八水氧氯化锆形成络合物,制得Zr(Ⅳ)-salen-MCM-41催化剂.采用X射线衍射、N2吸附-脱附、热重、红外光谱、电感耦合等离子体发射光谱和能量散射谱等分析手段对催化剂结构进行了表征.在含有该催化剂的体系中进行了硫化物选择氧化为亚砜以及醛与丙二腈和氰乙酸乙酯的Knoveonagel缩合反应,并考察了催化剂的循环使用性能. | Maryam Hajjami Farshid Ghorbani Sedighe Rahimipanah Safoora Roshani | 2015 | Chinese Journal of Catalysis2015，36，11： | 1 |
| 5 | A highly flexible green synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives with CuI nanoparticles as catalyst under solvent-free conditions显示文摘CuI nanoparticles as an efficient catalyst have been used for the preparation of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones by the four-component condensation reaction of phthalic anhydride, hydrazine monohydrate, aromatic aldehydes and malononitrile or ethyl cyanoacetate under solventfree conditions in good to excellent yields, short reaction times and environmentally benign, milder reaction conditions. | Javad Safaei-Ghomi Hossein Shahbazi-Alavi Abolfazl Ziarati Raheleh Teymuri Mohammad Reza Saberi | 2014 | Chinese Chemical Letters2014，25，3： | 1 |
| 6 | Synthesis and characterization of a new magnetic bromochromate hybrid nanomaterial with triethylamine surface modified iron oxide nanoparticles显示文摘We describe a novel method for the synthesis a new magnetic bromochromate hybrid nanomaterial,Fe_3O_4@SiO_2@TEA@[CrO_3Br],as a catalyst.The physical properties,morphology and magnetic investigations of magnetic bromochromate hybrid naiiomaterials are identified by transmission electron microscopy(TEM),scanning electron microscopy(SEM) and vibrating sample magnetometer(VSM) techniques.Fourier transform infrared(FT-IR),elemental analysis,X-ray fluorescence(XRF),X-ray diffraction(XRD) were also used for structural identification.The quantity of chromium is approximately 0.38%,which confirms to the immobilization amount of[CrO_3Br]and is equal to 0.007 mol/100 g. | Rahmatollah Rahimi Ali Maleki Saied Maleki | 2014 | Chinese Chemical Letters2014，25，6： | 1 |
| 7 | 2,3-二氢喹唑啉-4(1H)-酮类衍生物的合成研究进展显示文摘概述了水溶剂、有机溶剂、离子液体、无溶剂、乙醇/水溶剂中合成2,3-二氢喹唑啉-4(1H)-酮衍生物的研究进展,主要包括以邻氨基苯甲酰胺、醛(或酮)为基础原料的合成途径和以靛红酸酐、胺或铵盐化合物、醛(或酮)为基础原料的合成途径;并从催化剂性能、反应温度、反应时间、目标产物收率、底物适应用性范围等方面对各合成方法进行简述和比较。 | 张士国 陈霞 漆偲劼 | 2023 | 山东化工2023，52，5： | 0 |
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