Mostafa Fatholahi*, Shahnaz Rostamizadeh and Alimohammad Amani
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. 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. 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.
Xanthene, Leuco-dye, Nanocatalyst, MCM-41-SO3H, Ultrasonic irradiation, Geen chemistry.
Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran