304880-96-4

Upstream product

• 22105-09-5 4‐hydroxycoumarin 
• 3132-99-8 m-bromobenzoic aldehyde 
• 109-77-3 malononitrile 
• 1076-38-6 4-hydroxy[1]benzopyran-2-one 

Downstream Products

• 682760-25-4 4-(3-bromophenyl)-3,4-dihydro-2H,5H-pyrano[3,2-c]chromene-2,5-dione 

Relevant academic research and scientific papers

Synthesis and characterization of novel nanosilica molybdic acid and its first catalytic application in the synthesis of new and known pyranocoumarins

Nanosilica molybdic acid (nano-SMA) was prepared and employed as a novel, recyclable and safe catalyst for the one-pot, three-component condensation of 4-hydroxycoumarin with aldehydes and malononitrile to produce new and known pyrano[2,3-c]chromenes as p

A new approach for the synthesis of biologically active chromene compounds using a photo catalyst TiO2-Ag

A green and efficient method for the synthesis of chromene derivatives using TiO2 doped Ag as a photocatalyst under visible light irradiation at room temperature is reported. The advantages of our method are clean reaction condition, easy workup procedure, use of eco-friendly solvent, and recyclable catalyst and most importantly higher yield of the product. The photocatalyst was found to be highly efficient for the synthesis of chromene derivatives within a short reaction time. The photocatalyst was prepared and characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), and powder XRD technique and thermogravimetric analysis (TGA). In addition, the in-vitro study of helminths against S. obvelata were investigated and it was found that chromene derivatives were active against S. obvelata and showed no sign of acute toxicity in mice.

Zn (II)-Schiff base covalently anchored to CaO@SiO2: A hybrid nanocatalyst for green synthesis of 4H-pyrans

In this study, the Zn (II)-Schiff base covalently anchored onto the surface of CaO@SiO2 nanoparticles. The structure of this hybrid nanomaterial (CaO@SiO2-NH2-Sal-Zn) was characterized using the analytical techniques such

One‐pot and green synthesis 1H-pyrazolo[1,2-b]phthalazine-5,10-dione and dihydropyrano[3,2-c]chromene derivatives by Fe3O4@SiO2-imine/phenoxy-Cu(II) as an efficient and reusable catalyst

In the current study, magnetite-silica core–shell nanoparticles modified with Cu-salen complex (Fe3O4@SiO2-imine/phenoxy-Cu(II)) was utilized as a heterogeneous catalyst for the one-pot multicomponent synthesis of 1H-pyraz

Fe3O4@SiO2-BenzIm-Fc[Cl]/ZnCl2: a novel and efficient nano-catalyst for the one-pot three-component synthesis of pyran annulated bis-heterocyclic scaffolds under ultrasound irradiation

In this study, a novel magnetically recoverable Fe3O4@SiO2-BenzIm-Fc[Cl]/ZnCl2 nano-particle was synthesized using a simple chemical coprecipitation approach. In the FT-IR spectroscopy of nano-particles, related

Efficient synthesis of 2-amino-3-cyano-4H-pyran derivatives via a non-catalytic one-pot three-component reaction

Abstract: A convenient one-pot multi-component strategy was conducted successfully under catalyst-free conditions employing water and PEG-400 as the efficient and cheap promoting medium. Three types and nearly 50 2-amino-3-cyano-4H-pyran annulated derivat

γ-Fe2O3@Cu3Al-LDH-TUD as a new Amphoteric, Highly Efficient and Recyclable Heterogeneous Catalyst for the Solvent-free Synthesis of Dihydropyrano[3,2-c]pyrazoles and dihydropyrano[3,2-c]chromens

Thiourea dioxide was immobilized on γ-Fe2O3@Cu3Al-LDH magnetic nanoparticles to prepare the γ-Fe2O3@Cu3Al-LDH-TUD MNPs. The structure and properties of these magnetic nanoparticles were est

Bisferrocene-containing ionic liquid supported on silica coated Fe3O4: A novel nanomagnetic catalyst for the synthesis of dihydropyrano[2,3-c]coumarin derivatives

Nanomagnetic bisferrocene-containing ionic liquid supported on silica coated Fe3O4 (Fe3O4@SiO2@imidazol-bisFc[HCO3]) as a novel heterogeneous catalyst was synthesized and the structure and

Nano-Fe3O4@SiO2-supported boron sulfonic acid as a novel magnetically heterogeneous catalyst for the synthesis of pyrano coumarins

In this study, a novel magnetically heterogeneous catalyst based on the immobilization of boron sulfonic acid onto Fe3O4@SiO2 nanoparticles (Fe3O4@SiO2-BSA) is reported. Fe3Osub

Design, preparation and characterization of MoO3H-functionalized Fe3O4@SiO2 magnetic nanocatalyst and application for the one-pot multicomponent reactions

Molybdic acid-functionalized silica-based Fe3O4 nanoparticles (Fe3O4@SiO2-MoO3H) are found to be a powerful and magnetically recyclable nanocatalyst. The morphology and structure of this na