Title:One Pot Synthesis of Benzothiazole Derivatives by Nano Silica-based
Complex in an Aqueous Medium
Volume: 20
Issue: 3
Author(s): Hassan Yari, Ghasem Rezanejade Bardajee, Rahebeh Amiri Dehkharghani*Niloufar Akbarzadeh Torbati
Affiliation:
- Department of Chemistry, Islamic Azad University, Central Tehran Branch (IAUCTB), P.O. Box 1499669191, Tehran,
Iran
Keywords:
Nanocatalyst, nickel complex, pyridoxal phosphate schiff base, benzothiazole, heterocycles, SBA-15.
Abstract: We successfully synthesized novel silica-supported Ni (II)-PLP-ONNO Schiff base/SBA-
15 complex, as a mesoporous catalyst, whose characterization was determined using X-ray diffraction
analysis, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron
microscopy, inductively coupled plasma-atomic emission spectroscopy, nitrogen adsorption desorption
isotherms (BET-EDX) and (BET-BJH), and thermo-gravimetric analysis. A fabricated catalyst
was employed for facile and efficient, one-pot production of various benzothiazole heterocycles
by cyclocondensation reactions of 2-amionthiophenol and benzaldehyde compounds under green and
mild conditions with good to excellent yields. The prepared nano catalyst can offer high stability, excellent
activity, easy separation, and reusability, as well as environmentally friendly, compared to its
homogeneous compounds.