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• 141-97-9 ethyl acetoacetate 
• 123-11-5 4-methoxy-benzaldehyde 
• 126-81-8 dimedone 

Relevant academic research and scientific papers

Modification of boehmite nanoparticles with Adenine for the immobilization of Cu(II) as organic–inorganic hybrid nanocatalyst in organic reactions

Boehmite nanoparticles are aluminum oxide hydroxide (γ‐AlOOH) particles, which has large specific surface area (>120 m2 g?1) and can be prepared using an inexpensive procedure in water. Herein, we present an economical, simple, and environmentally friendly route for the preparation of a copper catalyst on Adenine coated boehmite nanoparticles (Cu–Adenine@boehmite). This catalyst has been characterized by several techniques such as SEM, XRD, AAS, ICP and TGA analysis. Cu–Adenine@boehmite was applied as highly efficient and reusable nanocatalyst in carbon–carbon coupling reactions between various aryl halides and sodium tetraphenyl borate, phenylboronic acid, or 3,4-diflorophenylboronic acid under aerobic conditions, palladium-free and phosphine-free ligand. Also this catalyst was applied for the synthesis of polyhydroquinoline derivatives. In continuation, selective oxidation of sulfides to sulfoxides using hydrogen peroxide (H2O2) was studied in the presence of Cu–Adenine@boehmite as catalyst. The synthesis of sulfoxides using H2O2 in the presence of Cu–Adenine@boehmite does not generate waste and any byproducts. This catalyst was reused for several times in C–C coupling reaction without loss of its catalytic activity. Reused catalyst was characterized by SEM, XRD and ICP techniques. Heterogeneity and stability of Cu–Adenine@boehmite were studied by hot filtration test, poisoning test and ICP analysis.

Core–shell nanostructure (Fe3O4?MCM-41?Cu-P2C) as a highly efficient and recoverable nanocatalyst for the synthesis of polyhydroquinoline, 5-substituted 1H-tetrazoles and sulfides

Fe3O4 magnetic nanoparticles were used as a core for Cu(II) Schiff base complex functionalized mesoporous MCM-41 shell to provide a core–shell nanostructure (Fe3O4?MCM-41?Cu-P2C). A simple, environmentally friendly, inexpensive, green reaction conditions and efficient procedure for the synthesis of polyhydroquinoline, 5-substituted 1H-tetrazoles and sulfides derivatives using this core–shell nanostructure as an efficient, novel and recoverable nanocatalyst has been described. Fe3O4?MCM-41?Cu-P2C is stable, cost-effective, heterogeneous, easy to handle and recoverable nanocatalyst and can be reused for several consecutive runs without a significant loss of catalytic activity. The catalyst was characterized by fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), powder X-ray diffractometer (XRD), scanning electron microscopy (SEM), atomic absorption spectroscopy (AAS), Brunauer–Emmett–Teller (BET) and vibrating sample magnetometer (VSM) techniques.

Al2(so4)3 is an efficient and mild acid catalyst for the one-pot, four-component synthesis of polyhydroquinoline

Aluminium sulfate has mild acidity, yet the acidity of aluminium sulfate is not taken advantage of in organic synthesis. Here, we utilized aluminium sulfate for the first time in a multicomponent reaction for the synthesis of polyhydroquinoline. A four-co

Cobalt nanoparticles promoted highly efficient one pot four-component synthesis of 1,4-dihydropyridines under solvent-free conditions

A straightforward and general method has been developed for the synthesis of C5-unsubstitiuted 1,4-dihydropyridines by a reaction using dimedone, acetophenone, aromatic aldehydes, and ammonium acetate in the presence of a catalytic amount of Co nanopartic