Fathollahi Mostafa, Rostamizadeh Shahnaz, Amani Ali M
Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran.
Comb Chem High Throughput Screen. 2018;21(1):5-13. doi: 10.2174/1386207321666180104111508.
The present study has developed an efficient and eco-friendly protocol for the synthesis of aryl-14-H-dibenzo[a,j] xanthenes through a one-pot condensation reaction of 2-naphthol and arylaldehydes in aqueous media using the nanocatalytic MCM-41-SO3H under ultrasonic illumination.
Using SEM and XRD analyses, MCM-41-SO3H nanoparticles were characterized. Therefore, for high magnification, taking the SEM image, the mesoporous surface of MCM-41-SO3H nanoparticles coated with gold for 2 minutes was characterized. Moreover, at a scan rate of 0.02° (2θ)/sec, XRD analysis from 1.5° (2θ) to 10.0° (2θ) was performed.
For our considered sample, some well-ordered XRD patterns with one main peak as well as three minor peaks equal to those of MCM-41 materials were observed.
The suggested route demonstrates very promising properties like higher yields, decrease in the time of reaction (5-10 min), mild and straightforward conditions, low level of toxicity, and inclusion of a cost-efficient and ecofriendly catalyst having considerable reusability.
本研究开发了一种高效且环保的方案，用于在水介质中，使用纳米催化的MCM - 41 - SO₃H并在超声照射下，通过2 - 萘酚与芳醛的一锅缩合反应合成芳基 - 14 - H - 二苯并[a,j]呫吨。
使用扫描电子显微镜（SEM）和X射线衍射（XRD）分析对MCM - 41 - SO₃H纳米颗粒进行表征。因此，为了进行高倍放大，拍摄SEM图像，对涂金2分钟的MCM - 41 - SO₃H纳米颗粒的介孔表面进行了表征。此外，以0.02°（2θ）/秒的扫描速率，进行了从1.5°（2θ）到10.0°（2θ）的XRD分析。
对于我们所研究的样品，观察到一些排列有序的XRD图谱，其具有一个主峰以及三个与MCM - 41材料相同的小峰。
所建议的路线展现出非常有前景的特性，如更高的产率、反应时间缩短（5 - 10分钟）、条件温和直接、低毒性水平，并且包含一种具有相当可重复使用性的经济高效且环保的催化剂。
