“…In literature, several catalysts and reagents have been reported for the synthesis tetrahydroquinazolinones, such as Nafion‐H, [ 38 ] PEG‐HClO 4, [ 39 ] TMSCl, [ 40 ] ceric ammonium nitrate (CAN), [ 23 ] ZnO NPs, [ 41 ] CuI NPs, [ 42 ] [bmim] + BF 4 − and [bmim] + Br −,[ 43 ] Cu@Ag Core‐Shell nanoparticle, [ 44 ] indium (III) trifluoromethane sulfonate In (OTf) 3, [ 28 ] MoO 3 ‐ZrO 2 nanocomposite oxide, [ 45 ] molybdenum anchored onto zeolite beta (Mo@imine‐Z), [ 46 ] SiO 2 ‐NaHSO 4, [ 47 ] ZrOCl 2 .8H 2 O, [ 48 ] acidic ionic liquid [Tbmim]Cl 2 /AlCl 3, [ 49 ] Cu/SiO 2, [ 50 ] CNT–Fe 3 O 4 –PTh nanocomposite, [ 51 ] phosphotungstic acid nanoclusters grafted onto high surface area hydrous zirconia PWA/ZrO 2, [ 52 ] Ytterium iron garnet supermagnetic Y 3 Fe 5 O 12 (YIG), [ 24 ] (Me (Im) 12 )H 4 CuPW 11 O 39 as a surfactant type, [ 53 ] Zn (OTf) 2, [ 54 ] and p ‐Toluenesulfonic acid. [ 55 ] However, many of these methods suffer some drawbacks such as high‐temperature reaction, long reaction times, poor yields, and use of hazardous or costly catalysts.…”