TS-1 zeolite as a Lewis acid catalyst for solvent-free one-pot synthesis of 1,3-thiazolidin-4-ones

Abstract

Titanium silicate (TS-1) zeolite heterogeneous catalyst is synthesized by the hydrothermally discontinuous method and is characterized by using XRD, SEM, TEM, and NH3–TPD techniques. The catalytic activity of the TS-1 type zeolite was tested for one-pot solvent-free synthesis of 1,3-thiazolidine-4-ones. The present technique illustrates many benefits, including eco-friendly reaction conditions, environmentally helpful, short response time, simplicity, straightforward separatation, catalyst reusability and high yields of the products. Furthermore, the catalyst was utilized for four recycle reactions and it has been found that the catalyst shows consistent chemical process activity.