iron(III) oxide; acetic anhydride T=25 - 30°C; Erlenmeyer-Plochl-Bergmann; 0.166667 h; SonicationIrradiation;

1: 4-bromobenzyl-alcohol With di[1,6-bis(3-methylimidazolium-1-yl)hexane]decatungstate; [bmim+][NO3-] T=80°C; 2: N-(benzoyl)glycine With acetic anhydride T=80°C; Erlenmeyer-Plochl azlactone and amino acid synthesis;

1: N-(benzoyl)glycine; 4-bromo-benzaldehyde With sodium acetate; acetic anhydride Heating; 2: 1,3-Diphenyl-5-amino pyrazole Heating;