An effective, recyclable, eco-friendly 3-(2-aminoethyl)-1-methyl-1H-imidazol-3-ium bromide [Aemim]Br: Solvent, base free synthesis of carbonyl compound catalyst by FeCl3/TEMPO

•Novel solvent, base free synthesis of carbonyl compound catalyst by iron/TEMPO at 40 °C with high-rate.•The significant of present method are (1) Wide substrate scope, (2) Easy separation, (3) Green route synthesis, (4) less catalyst loading (0.01 mol%, 5) High Rate 5.53 to 22.50.•The procedure is easy and does not require special precautions. We first report a novel solvent, base free synthesis of carbonyl compound catalyst by FeCl3/TEMPO at 40 °C with high-rate. In this article, we examine the mechanism of this catalytic system and compare the reactivity of aromatic alcohols. Furthermore, the efficacy of 3-(2-aminoethyl)-1-methyl-1H-imidazol-3-ium bromide [Aemim]Br could be maintained after seven recycling cycles. High catalyst productivity and reaction rate (5.53 to 22.50) have been accomplished with the use of an enhanced procedure. [Display omitted]