Triethylamine-bonded sulfonic acid ([Et<sub>3</sub>N–SO<sub>3</sub>H]Cl): a highly efficient and homogeneous catalyst for the condensation of 2-naphthol with arylaldehydes and amides (alkyl carbamates or thioamides)
Ionic liquid triethylamine-bonded sulfonic acid ([Et 3N–SO 3H]Cl, N,N-diethyl-N-sulfoethanammonium chloride) is utilized as a highly efficient, inexpensive and homogeneous catalyst to promote the following one-pot multi-component organic transformations under solvent-free conditions: (i) the condensation of 2-naphthol with arylaldehydes and amides leading to 1-amidoalkyl-2-naphthols, (ii) the reaction
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。
Brønsted acidic ionic liquid as an efficient and reusable catalyst for one-pot synthesis of 1-amidoalkyl 2-naphthols under solvent-free conditions
作者:Abdol R. Hajipour、Yosof Ghayeb、Nafisehsadat Sheikhan、Arnold E. Ruoho
DOI:10.1016/j.tetlet.2009.07.116
日期:2009.10
amidoalkyl naphthols from condensation of aldehydes with amides or urea and 2-naphthol in the presence of a catalytic amount of Brønstedacidicionicliquid ([TEBSA][HSO4]) under thermal solvent-free conditions. High yields, short reaction time, easy work-up and reusability of the catalyst are advantages of this procedure.
Silicon-Induced General, Mild, and Efficient One-Pot, Three-Component Synthesis of Amidoalkyl Naphthol Libraries
作者:Tarek Salama
DOI:10.1055/s-0032-1318392
日期:——
A general mild and efficient protocol for the synthesis of amidoalkyl naphthol libraries was achieved utilizing tetrachlorosilane and zinc chloride in dichloromethane at ambient temperature via a one-pot, three-component condensation of various aldehydes, nitriles (amides), and β-naphthol.
A modified reaction for the preparation of amidoalkyl naphthols
作者:Hamid Reza Shaterian、Hossein Yarahmadi
DOI:10.1016/j.tetlet.2007.12.093
日期:2008.2
An efficient synthesis of amidoalkyl naphthols using FeCl3·SiO2 as a heterogeneous catalyst is described. This thermal solvent-free procedure offers advantages such as shorter reaction times, simple work-up, excellent yields, and recovery and reusability of the catalyst.