Magnetic core-shell titanium dioxide nanoparticles as an efficient catalyst for domino Knoevenagel-Michael-cyclocondensation reaction of malononitrile, various aldehydes and dimedone

Khazaei Ardeshir; Gholami Fatemeh; Khakyzadeh Vahid; Moosavi-Zare Ahmad Reza; Afsara Javad

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Magnetic core-shell titanium dioxide nanoparticles as an efficient catalyst for domino Knoevenagel-Michael-cyclocondensation reaction of malononitrile, various aldehydes and dimedone

机译：磁性核-壳二氧化钛纳米颗粒可作为丙二腈，各种醛和二甲酮的多米诺Knoevenagel-Michael-环缩合反应的有效催化剂

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Magnetic core-shell titanium dioxide nanoparticles (Fe3O4@SiO2@TiO2) were efficiently used for the preparation of tetrahydrobenzo[b] pyran derivatives via a one-pot three component condensation reaction of various aldehydes, dimedone and malononitrile at 100 degrees C under solvent-free conditions. The catalyst was synthesized and characterized by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), field-emission scanning electron microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDX).

机译：磁性核-壳二氧化钛纳米粒子（Fe3O4 @ SiO2 @ TiO2）通过溶剂中100摄氏度下各种醛，二甲酮和丙二腈的一锅三组分缩合反应有效地用于制备四氢苯并[b]吡喃衍生物。免费条件。通过几种技术合成并表征了催化剂，包括X射线衍射（XRD），透射电子显微镜（TEM），场发射扫描电子显微镜（FESEM）和能量色散X射线光谱（EDX）。

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《RSC Advances》 |2015年第19期|共6页
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Khazaei Ardeshir; Gholami Fatemeh; Khakyzadeh Vahid; Moosavi-Zare Ahmad Reza; Afsara Javad;
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1. Magnetic core-shell titanium dioxide nanoparticles as an efficient catalyst for domino Knoevenagel-Michael-cyclocondensation reaction of malononitrile, various aldehydes and dimedone [J] . Khazaei Ardeshir, Gholami Fatemeh, Khakyzadeh Vahid, RSC Advances . 2015,第19期

机译：磁性核-壳二氧化钛纳米颗粒可作为丙二腈，各种醛和二甲酮的多米诺Knoevenagel-Michael-环缩合反应的有效催化剂
2. Palladium Supported on Magnetic Core-Shell Nanoparticles: An Efficient and Reusable Catalyst for the Oxidation of Alcohols into Aldehydes and Ketones by Molecular Oxygen [J] . Zhang Lei, Li Pinhua, Yang Jin, ChemPlusChem . 2014,第2期

机译：钯支撑在磁芯 - 壳纳米粒子上：通过分子氧气将醇氧化成醛和酮的有效和可重复使用的催化剂
3. Palladium nanoparticles immobilized on core-shell magnetic fibers as a highly efficient and recyclable heterogeneous catalyst for the reduction of 4-nitrophenol and Suzuki coupling reactions [J] . Le Xuanduong, Dong Zhengping, Liu Yansheng, Journal of Materials Chemistry, A. Materials for energy and sustainability . 2014,第46期

机译：钯纳米颗粒固定在核-壳磁性纤维上，作为高效且可回收的多相催化剂，用于减少4-硝基苯酚和Suzuki偶联反应
4. Preparation of silver-titanium dioxide core-shell (Ag@TiO2) nanoparticles: Effect of Ti-Ag mole ratio [C] . S. Angkaew, P. Limsuwan International Science, Social Science, Engineering and Energy Conference . 2013

机译：二氧化银碳纤维 - 壳（Ag @ TiO2）纳米颗粒的制备：Ti-Ag摩尔比的影响
5. Part I. Asymmetric hydrosilylation of acetophenone using titanium catalysts. Part II. Synthesis of water-soluble palladacycles and their applications to the Suzuki reaction. Part III. Rhodium-catalyzed addition of aryl and alkenylboronic acids to aldehyde [D] . Huang, Rongcai. 2005

机译：第一部分：使用钛催化剂的苯乙酮不对称氢化硅烷化。第二部分水溶性palladacycles的合成及其在铃木反应中的应用。第三部分铑催化的芳基和烯基硼酸加成醛
6. Back Cover: Deeper Insight into the Six‐Step Domino Reaction of Aldehydes with Malononitrile and Evaluation of Antiviral and Antimalarial Activities of the Obtained Bicyclic Products (ChemistryOpen 3/2017) [O] . Christina M. Bock, Dr. Gangajji Parameshwarappa, Simon Bönisch, 2017

机译：封底：对醛与丙二腈的六步多米诺反应的更深入了解以及获得的双环产物的抗病毒和抗疟活性评估（ChemistryOpen 3/2017）
7. Tandem Knoevenagel-Michael-cyclocondensation reaction of malononitrile, various aldehydes and barbituric acid derivatives using isonicotinic acid as an efficient catalyst [O] . 2019

机译：串联Knoevenagel-Michael-丙二腈，各种醛和巴比妥酸衍生物的环己烷化反应，使用异烟酸作为有效催化剂

Magnetic core-shell titanium dioxide nanoparticles as an efficient catalyst for domino Knoevenagel-Michael-cyclocondensation reaction of malononitrile, various aldehydes and dimedone

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