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• 30182-67-3 1,3-Cyclohexanedione 
• 1867-38-5 4-chlorobenzylidenemalonodinitrile 

Relevant academic research and scientific papers

Base free synthesis of iron oxide supported on boron nitride for the construction of highly functionalized pyrans and spirooxindoles

Boron nitride supported iron oxide (BN@Fe3O4) network was achieved via chemical reduction followed by aerial oxidation in absence of base. The prepared BN@Fe3O4 was characterized by powder XRD, FT-IR, Raman, BET and FE-SEM. The catalytic property was subsequently investigated for one-pot multicomponent domino reaction for the synthesis of highly functionalized pyrans and spirooxindoles derivatives on water. The present method is simple, high yielding, recyclable and requires no column chromatography.

One‐pot synthesis of dihydro-1H-indeno[1,2-b] pyridines and tetrahydrobenzo[b] pyran derivatives using a new and efficient nanocomposite catalyst based on N‐butylsulfonate‐functionalized MMWCNTs-D-NH2

In this study, magnetic multi-walled carbon nanotubes were functionalized with polyamidoamine (PAMAM) dendrimers and modified with butylsulfonate to afford MMWCNTs-D-(CH2)4-SO3H. The synthesized nanocomposite (MMWCNTs-D-(C

Br?nsted acidic hydrogensulfate ionic liquid immobilized SBA-15: [MPIm][HSO4]@SBA-15 as an environmentally friendly, metal- and halogen-free recyclable catalyst for Knoevenagel-Michael-cyclization processes

The Br?nsted acidic imidazolium-based metal-free and halogen-free ionic liquid hydrogen sulfate was immobilized on nanoporous silica SBA-15. The structures of synthesized catalysts were investigated using different characterization techniques, including FT-IR, small angle XRD, SEM, TEM and TGA. The [MPIm][HSO4]@SBA-15 is used as an alternative to conventional catalysts in the Knoevenagel-Michael-cyclization processes for the synthesis of tetrahydrochromenes and hexahydroquinoline carboxylates via a multicomponent procedure. The reaction time is reduced drastically and the reaction is progressed in an environmentally friendly way. The immobilized catalyst can be recycled without substantial loss of activity after seven runs.

Phenylboronic acid as an efficient and convenient catalyst for a three-component synthesis of tetrahydrobenzo[b]pyrans

Phenylboronic acid, a non-toxic compound, is used as catalyst for an efficient, rapid, and one-pot three-component synthesis of tetrahydrobenzo[b] pyrans in good to excellent yields. This new procedure has the advantages of operational simplicity, shorter

Size-controlled crystalline basic nanoporous coordination polymers of Zn4O(H2N-TA)3: Catalytically study of IRMOF-3 as a suitable and green catalyst for selective synthesis of tetrahydro-chromenes

Size-controlled crystalline basic nanoporous coordination polymers of IRMOF-3 (Zn4O(H2N-TA)3) and its catalytically study for synthesis of tetrahydro-chromenes was investigated. IRMOF-3 was found to be an efficient, select

Effective one-pot synthesis of tetrahydrobenzo[b]pyran derivatives using nickel Schiff-base complex immobilized on iron oxide nanoparticles

Nickel Schiff-base complex immobilized on silica-coated Fe3O4 as a heterogeneous catalyst was designed and characterized by different techniques, such as Fourier transform infrared (FT-IR), X-ray powder diffraction (XRD), field emiss

Preparation and characterization of silica-supported magnetic nanocatalyst and application in the synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives

Silica-supported magnetic nanoparticles were simply prepared in high yields and characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and energy-dispersive X-ray spectr

Efficient synthesis of 4H-pyran derivatives using a polymeric catalyst based on PVP

A one-pot efficient method for the synthesis of 4H-pyran derivatives has been developed through a multi-component reaction of aldehydes, malononitrile, and 1,3-cyclic diketones using poly(vinylpyrrolidonium) hydrogen sulfate ([PVPH]HSO4) as a h

Nano α-Al2O3 supported ammonium dihydrogen phosphate (NH4H2PO4/Al2O3): Preparation, characterization and its application as a novel and heterogeneous catalyst for the one-pot synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3-c]pyrazole derivatives

A simple, efficient, and environmentally benign route was developed for the preparation of 2-amino-3-cyano-4-aryl-7,7-dimethyl-5,6,7,8-tetrahydrobenzo[b]pyrans and 6-amino-5-cyano-4-aryl-1,4-dihydropyrano[2,3-c]pyrazoles from the condensation of various aldehydes, malononitrile, and 1,3-dicarbonyl compounds (1,3-cyclohexanedione or 5,5-dimethyl-1,3-cyclohexanedione) or 3-methyl-1-phenyl-2-pyrazoline-5-one, using NH4H2PO4/Al2O3 with good yields. The use of easily available catalyst, shorter reaction times, better yields, the simplicity of the reaction, the heterogeneous system, and the easy work up are the advantages of the present method. Characterization of the catalyst was performed by FT-IR spectroscopy, X-ray diffraction (XRD) techniques, thermal analysis (TG/DTG) and Transmission electron microscopy (TEM).

Ball milling for the quantitative and specific solvent-free Knoevenagel condensation + Michael addition cascade in the synthesis of various 2-amino-4-aryl-3-cyano-4H-chromenes without heating

Ball milling is used as a facile, efficient, cheap, and environmentally friendly procedure for the solvent-free three-component reaction of aromatic aldehydes with malononitrile and dimedone, or 1,3-cyclohexanedione, resorcinol, and α- and β-naphthol. The