333769-53-2

Basic information

• Product Name: 2-amino-5-oxo-4-(2,5-dimethoxyphenyl)-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile
• Synonyms: 2-amino-5-oxo-4-(2,5-dimethoxyphenyl)-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile
• CAS NO: 333769-53-2
• Molecular Weight: 376.368
• Mol File: 333769-53-2.mol

Chemical Properties

• CAS DataBase Reference: 2-amino-5-oxo-4-(2,5-dimethoxyphenyl)-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile(CAS DataBase Reference)
• NIST Chemistry Reference: 2-amino-5-oxo-4-(2,5-dimethoxyphenyl)-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile(333769-53-2)
• EPA Substance Registry System: 2-amino-5-oxo-4-(2,5-dimethoxyphenyl)-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile(333769-53-2)

Safety Data

• Hazardous Substances Data: 333769-53-2(Hazardous Substances Data)

Upstream product

• 22105-09-5 4‐hydroxycoumarin 
• 93-02-7 2,5-dimethoxybenzaldehyde 
• 109-77-3 malononitrile 
• 1076-38-6 4-hydroxy[1]benzopyran-2-one 

Relevant articles and documents

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High-efficient synthesis of 2-imino-2H-chromenes and dihydropyrano[c]chromenes using novel and green catalyst (CaO@SiO2@AIL)

In this work, 1,3,5,7-tetraazaadamantan-1-ium chloride (AIL) functionalized silica-coated calcium oxide hybrid nanocatalyst (CaO@SiO2@AIL) as a novel, efficient, green and recyclable heterogeneous ionic liquid catalyst was synthesized. Catalytic activity of the CaO@SiO2@AIL hybrid nanoparticles was investigated for synthesis of the pharmaceutically valuable 2-imino-2H-chromene and dihydropyrano[c]chromene derivatives. A wide range of amines and aromatic aldehydes containing either electron-withdrawing or electron-donating substituent were examined using optimized conditions to produce the desired products. 2-Imino-2H-chromenes were synthesized under solvent-free condition, and dihydropyrano[c]chromenes were prepared in aqueous medium as green conditions within short reaction times, high yields and using easy workup procedures. Structure confirmation and surface properties of the core/shell hybrid nanoparticles were considered via Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy, WDS map scan, thermogravimetric and elemental analyses. This IL-supported heterogeneous nanocatalyst can be reused at least six times without considerable loss of its performance.

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2-Amino-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile derivatives are obtained in excellent yields by a simple, mild and efficient procedure by an electrocatalytic multicomponent chain transformation of aryl aldehydes, 4-hydroxycoumarin and malono

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A task-specific ionic liquid, [H3N+-CH2-CH2-OH][CH3COO-], was successfully applied as an efficient and reusable catalyst for the one-pot domino to approach to dihydropyrano[3,2-c]chromene derivatives with atom economy in a condensation reaction of 4-hydro

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The Knoevenagel condensation reaction of aromatic aldehydes with malononitrile or dimedone was investigated. Also, the three-component and one-pot synthesis of 2-amino-5-oxo-4-aryl-4,5-dihydropyrano[3,2-cchromene-3- carbonitrile derivatives by condensing