SnO₂/SiO₂Nanocomposite Catalyzed One-Pot Synthesis of 2-Arylbenzothiazole Derivatives

Abstract

SnO 2 /SiO 2 nanocomposite has been synthesized by using sol-gel method. Prepared catalytic materials has been well characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), Brunauer-Emmer-Teller (BET) surface area, and temperature-programmed desorption of ammonia (NH 3 -TPD). SnO 2 /SiO 2 nanocomposite catalyzed synthesis of 2-arylbenzothiazoles by the cyclocondensation of 2-aminothiophenol and aromatic aldehydes under reflux condition in 1:1 EtOH:H 2 O. After completion of the reaction, catalyst can be recovered efficiently and reused with consistent activity.

Solid‐Supported Materials‐Based Synthesis of 2‐Substituted Benzothiazoles: Recent Developments and Sanguine Future

“…Yelwande et al [208] have reported SnO 2 /SiO 2 nanocomposite as a new heterogeneous catalytic system for the preparation of 2-arylbenzothiazoles (19). Initially, the reaction was explored Scheme 23.…”

Synthesis of Bioactive Five- and Six-Membered Heterocycles Catalyzed by Heterogeneous Supported Metals

“…Lande et al have developed a methodology based on simple condensation of 2-aminothiophenol and aromatic aldehydes for the synthesis of 2-arylbenzothiazoles using SnO 2 supported on SiO 2 (15 wt%) as a heterogeneous catalyst (Scheme 64) [85]. The catalytic activity of 15 wt% SnO 2 /SiO 2 was higher as compared to pure SnO 2 which gave lower yield of products at higher time range.…”

An Efficient Synthesis of 2,4,5-Triaryl-1h-Imidazole Using Sno2/Sio2 Nanocomposite Catalyst

“…Hence here we are interested to synthesized 2,4,5-triaryl-1Himidazoles using SnO2/SiO2 which is a mesoporous silica supported heterogeneous catalyst with large surface area, high thermal stability and having large range of tunable pores. As it is a nano-composite material show enhanced properties than those of the individual components used separately [18][19][20][21][22] .…”