In my work I have focused on the various aspects of Biginelli reaction
using a very promising and effective heterogeneous catalyst. The
catalyst having acidic property and eco-friendly nature which is derived
from thiomaleic anhydride composited with silica gel porous material for
three component one-pot Biginelli reactions. Total seven biginellibased
reactions were performed and all the products were obtained with good
yields. This bronsted acid catalyst works efficiently at room
temperature or with some heating without refluxing and high yielding in
lesser time. This single step and one-pot synthesis takes almost two
hours to complete the reactions. Product separation is simple just by
filtration. Very low amount of organic solvent is required to conduct
the reactions. Catalyst is characterized by BET analysis. NMR and
IRcharacterizations are done with all the seven obtained products. All
the reactions progress will be controlled by thin layer chromatography
methods and the measurements of melting points of all the dried
products.