Aluminium -based ionic liquid grafted on Biochar as a heterogeneouscatalyst for the synthesis of ۲,۳-dihydroquinazolin-۴(۱H)-one

Biomass as the only carbon neutral alternative, has the unique chemical structure containingtailored surface functional groups and large surface area. Having these features has made it easyto prepare by activation and/or functionalization.The selection of biochar as a surface will be idealfor the preparation of heterogeneous catalysis [۱, ۲]. Recently, ionic liquids are suitable substitutefor old conventional catalyst and do not leave any toxicity in the reaction medium [۳]. Aluminium-based ionic liquid grafted on biochar surface (BC\[TESPMI]۲AlCl۳) was synthesized as a catalystfor the synthesis of ۲,۳-dihydroquinazolin-۴(۱H)-one and characterized by FTIR, XRD, TGA,FESEM, and EDS. This results disclosed that the chemical grafting was successfully performed.The high activity in mild condition and the simple recoverable from the reaction are the suitablecharacteristics of this catalyst. Finally, the catalyst sustained activity for five cycles of reaction

Keywords:

Biochar , ۲ , ۳-dihydroquinazolin-۴(۱H)-one , Ionic liquid , Recoverable nanocatalyst