Preparation and characterization of Fe3O4@SiO2@PMA:AS an efficient and recyclable nanocatalyst for the synthesis of 1-amidoalkyl-2-naphthols
作者:Mohsen Esmaeilpour、Jaber Javidi、Maryam Zandi
DOI:10.1016/j.materresbull.2014.04.019
日期:2014.7
superparamagnetic Fe 3 O 4 @SiO 2 that is synthesized based on several stages. First of all, the Fe 3 O 4 @SiO 2 nanosphere core-shell is synthesized. Then, H 3 PMo 12 O 40 nanoparticles were synthesized by the treatment of H 3 PMo 12 O 40 with n -Octane as solvent by a solvothermal method and this nano hetero polyacid immobilized onto the imidazole functionalized Fe 3 O 4 @SiO 2 nanoparticles. The
摘要 在本文中,我们报道了一种基于多个阶段合成的功能化超顺磁性 Fe 3 O 4 @SiO 2 的制备方法。首先,合成了Fe 3 O 4 @SiO 2 纳米球核壳。然后,通过溶剂热法用正辛烷作为溶剂处理H 3 PMo 12 O 40 合成H 3 PMo 12 O 40 纳米颗粒,并将该纳米杂多酸固定在咪唑官能化的Fe 3 O 4 @SiO 2 纳米颗粒上。样品的结构通过XRD、TEM、DLS、FE-SEM、FT-IR、N 2 吸附-解吸等温线分析和VSM表征。此外,还描述了一种使用 β-萘酚、醛和乙酰胺的多组分、一锅缩合反应制备酰胺烷基萘酚的有效和直接的方案,在无溶剂和微波条件下,在 Fe 3 O 4 @SiO 2 -imid-PMA n 存在下苯甲酰胺和尿素。此外,纳米催化剂可以很容易地通过磁场回收并在接下来的反应中重复使用至少 5 次,而不会明显降低催化活性。
Efficient One-Pot Syntheses of Betti Bases Catalyzed by 1-Methyl-3-(2-(sulfooxy)ethyl)-1<i>H</i>-imidazol-3-ium Chloride
The efficient one‐pot syntheses of Bettibases by the three‐component reaction of aromatic aldehyde, 2‐naphthalen, and acetonitrile (or benzamide) catalyzed by 1‐methyl‐3‐(2‐(sulfooxy)ethyl)‐1H‐imidazol‐3‐ium chloride is reported. The solvent can be recycled easily.
Eco-friendly and efficient multi-component method for preparation of 1-amidoalkyl-2-naphthols under solvent-free conditions by dodecylphosphonic acid (DPA)
作者:Maryam Zandi、Ali Reza Sardarian
DOI:10.1016/j.crci.2011.11.012
日期:2012.4
Résumé An efficient and direct eco-friendly protocol for the preparation of 1-amidoalkyl-2-naphthols employing a multi-component, one-pot condensation reaction between β-naphthol, aromatic or aliphatic aldehydes and benzamide or acetamide in the presence of dodecylphosphonic acid under solvent-free conditions has been described.
An efficient, inexpensive, and mild method for the synthesis of amidoalkyl naphthols, catalyzed by ‘silicasulfuricacid’ (SSA), was elaborated under solvent-free conditions at room temperature. Various amidoalkyl naphthols were synthesized in high yields from aromatic or aliphatic aldehydes, α- or β-naphthols, and amides or urea or thiourea.
Solvent-free, one-pot synthesis of amidoalkyl naphthols by a copper p-toluenesulfonate catalyzed multicomponent reaction
作者:Min Wang、Yan Liang
DOI:10.1007/s00706-010-0429-7
日期:2011.2
AbstractAn efficient synthesis of amidoalkyl naphthols using copper p-toluenesulfonate (CPTS) as catalyst for the three-component condensation reaction of 2-naphthol, aldehydes, and amides under thermal, solvent-free conditions is described. This new approach has advantages such as short reaction time, high yield, simple work-up, and reusable catalyst. Graphical abstract