Fe 3 O 4磁性纳米颗粒用作Cu(II)Schiff碱配合物官能化的介孔MCM-41壳的核,以提供核-壳纳米结构(Fe 3 O 4 @ MCM-41 @ Cu-P2C)。已经描述了一种简单,环保,廉价,绿色的反应条件以及使用该核-壳纳米结构作为一种高效,新颖和可回收的纳米催化剂来合成聚氢喹啉,5-取代的1 H-四唑和硫化物衍生物的有效方法。铁3 O 4@ MCM-41 @ Cu-P2C是稳定,具有成本效益,非均相,易于处理和可回收的纳米催化剂,可以重复使用多次,而不会显着降低催化活性。该催化剂的特征在于傅里叶变换红外光谱(FT-IR),热重分析(TGA),粉末X射线衍射仪(XRD),扫描电子显微镜(SEM),原子吸收光谱(AAS),Brunauer-Emmett-Teller( BET)和振动样品磁力计(VSM)技术。
Core–shell nanostructure (Fe3O4@MCM-41@Cu-P2C) as a highly efficient and recoverable nanocatalyst for the synthesis of polyhydroquinoline, 5-substituted 1H-tetrazoles and sulfides
作者:Mohsen Nikoorazm、Zahra Erfani
DOI:10.1016/j.cplett.2019.136784
日期:2019.12
Fe3O4 magneticnanoparticles were used as a core for Cu(II) Schiff base complex functionalized mesoporous MCM-41 shell to provide a core–shell nanostructure (Fe3O4@MCM-41@Cu-P2C). A simple, environmentally friendly, inexpensive, green reaction conditions and efficient procedure for the synthesis of polyhydroquinoline, 5-substituted 1H-tetrazoles and sulfidesderivatives using this core–shell nanostructure
Fe 3 O 4磁性纳米颗粒用作Cu(II)Schiff碱配合物官能化的介孔MCM-41壳的核,以提供核-壳纳米结构(Fe 3 O 4 @ MCM-41 @ Cu-P2C)。已经描述了一种简单,环保,廉价,绿色的反应条件以及使用该核-壳纳米结构作为一种高效,新颖和可回收的纳米催化剂来合成聚氢喹啉,5-取代的1 H-四唑和硫化物衍生物的有效方法。铁3 O 4@ MCM-41 @ Cu-P2C是稳定,具有成本效益,非均相,易于处理和可回收的纳米催化剂,可以重复使用多次,而不会显着降低催化活性。该催化剂的特征在于傅里叶变换红外光谱(FT-IR),热重分析(TGA),粉末X射线衍射仪(XRD),扫描电子显微镜(SEM),原子吸收光谱(AAS),Brunauer-Emmett-Teller( BET)和振动样品磁力计(VSM)技术。
Al2(SO4)3 IS AN EFFICIENT AND MILD ACID CATALYST FOR THE ONE-POT, FOUR-COMPONENT SYNTHESIS OF POLYHYDROQUINOLINE
作者:PRAMOD KULKARNI
DOI:10.4067/s0717-97072014000100017
日期:——
Cobalt Nanoparticles Promoted Highly Efficient One Pot Four-Component Synthesis of 1,4-Dihydropyridines under Solvent-Free Conditions
A straightforward and general method has been developed for the synthesis of C(5)-unsubstitiuted 1,4-dihydropyridines by a reaction using dimedone, acetophenone, aromatic aldehydes, and ammonium acetate in the presence of a catalytic amount of Co nanoparticles as a heterogeneous and eco-friendly catalyst with high catalytic activity at room temperature under solvent-free conditions. This catalyst is easily separated by magnetic devices and can be reused without any apparent loss of activity for the reaction. In addition, it is very interesting that when using Co nanoparticles as a catalyst, spatially-hindered aldehydes such as 2-methoxy-, 2-fluoro-, and 2-chloro-aldehydes are suitable for this reaction.
Modification of boehmite nanoparticles with Adenine for the immobilization of Cu(II) as organic–inorganic hybrid nanocatalyst in organic reactions
applied as highlyefficient and reusable nanocatalyst in carbon–carbon coupling reactions between various aryl halides and sodium tetraphenyl borate, phenylboronic acid, or 3,4-diflorophenylboronic acid under aerobic conditions, palladium-free and phosphine-free ligand. Also this catalyst was applied for the synthesis of polyhydroquinolinederivatives. In continuation, selective oxidation of sulfides to sulfoxides