Bisferrocene-containing ionic liquid supported on silica coated Fe 3 O 4 : A novel nanomagnetic catalyst for the synthesis of dihydropyrano[2,3- c ]coumarin derivatives

Fe3O4@SiO2@Im‐bisethylFc [HC2O4] as a novel recyclable heterogeneous nanocatalyst for synthesis of bis‐coumarin derivatives

“…We also synthesized a series of aromatic aldehydes (Scheme ), and applied them to synthesize new bis‐coumarin derivatives using condensation of these aldehydes and 4‐hydroxycoumarin catalyzed by Fe 3 O 4 @SiO 2 @Im‐bisethylFc [HC 2 O 4 ] nanocatalyst under optimized conditions (Table ) .…”

“…Then the solvent was removed by rotary evaporator and at the end the residue was purified by column chromatography. 5‐Chloro‐2,2‐bis (ethylferrocenyl) pentane was obtained in 65% yield as orange oil with relatively high viscosity …”

“…Herein, in continuation of previous research on the synthesis of ferrocene‐IL‐based MNPs for catalysis of multi component reactions, in this work we report the synthesis and structural characterization of Fe 3 O 4 @SiO 2 @Im‐bisethylFc [HC 2 O 4 ] as a novel recyclable heterogeneous nanocatalyst and also, using this new synthesized nanocatalyst, we were able to provide a simple and effective way of synthesizing bis‐coumarin derivatives under reflux conditions in ethanol (Scheme ).…”

2‐[(4‐Aminobutyl)ferrocenylmethylidene]‐5,6‐dimethoxy‐1‐indanone derivatives: Synthesis, characterization, and investigation of electro‐optical properties

“…2,3‐Dihydro‐5,6‐dimethoxy‐1‐indanone is a well‐known starting material in organic chemistry, but few reports are available on the study of optical properties of its derivatives . We previously mentioned some articles that focused on the investigation of electrochemical and optical properties of ferrocenyl derivatives . Because of the interesting properties of Fc as the optically and electrochemically active moiety and because of the prominent property of 2,3‐dihydro‐5,6‐dimethoxy‐1‐indanone in organic synthesis, here we report the preparation of a new ferrocenyl aldehyde bearing a 4‐chlorobutyl side chain.…”

Sustainable Aromatic Aliphatic Polyesters and Polyurethanes Prepared from Vanillin-Derived Diols via Green Catalysis

“…The phenolic alcohol can also, if desired, be functionalized to introduce an aliphatic alcohol. Reza et al functionalized this phenolic position on vanillin by reacting it with 2-chloroethanol with catalytic potassium carbonate at reflux in DMSO for 6 h obtained 75% yield of 4-(2-hydroxyethoxy)-3-methoxybenzaldehyde [32]. Yang et al performed a similar reaction in dimethylformamide (DMF) at 100 • C for 5 h to obtain a yield only of 57% [33].…”