Preparation of novel functionalized ionic liquid: Green, stable, and reusable catalyst for the synthesis of new 2-(phenylsulfonyl)-1H-benzo[a]pyrano[2,3-c]phenazin-3-amine derivatives

Fe3O4@SiO2@[Aminoglycol][Formate] as a new superparamagnetic nanocatalyst and [Aminoglycol][Formate] as a novel ionic liquid catalyst for preparation of new dimethyldihydropyrimido[4,5-b]quinolone derivatives

Efficient synthesis of novel dimethyldihydropyrimido[4,5-b]quinolones via three-component condensation of barbituric acid, arylaldehydes, and 3,4-dimethylaniline catalyzed by Fe3O4@SiO2@[Aminoglycol][Formate] as a new superparamagnetic nanocatalyst and [Aminoglycol][Formate] as a novel ionic liquid catalyst was described. The new heterogeneous nanocatalyst was characterized by FE-SEM, XRD, FT-IR, TGA-DTG, and VSM techniques. The new ionic liquid was characterized by 13CNMR, 1HNMR, and FT-IR techniques. The present work has advantages, such as excellent yields, short reaction times, environmentally friendly protocol, easy separation, and purification of products. The catalysts kept its catalytic properties after even five recoverability and reusability.