23050-17-1

Upstream product

• 22105-09-5 4‐hydroxycoumarin 
• 459-57-4 4-fluorobenzaldehyde 
• 1076-38-6 4-hydroxy[1]benzopyran-2-one 
• 24133-58-2 1,2-bis(4-fluorophenyl)-1,2-ethanediol 

Relevant academic research and scientific papers

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.

DABCO-modified super-paramagnetic nanoparticles as an efficient and water-compatible catalyst for the synthesis of pyrano[3,2-c:5,6-c']dichromene-6,8-dione derivatives under mild reaction conditions

In this paper, a novel catalyst is introduced based on the immobilization of 1,4-diazabicyclo[2.2.2] octane (DABCO) on super-paramagnetic iron oxide nanoparticles. For the synthesis of the catalyst, silica-magnetic iron oxide core-shell nanoparticles were

Pseudo Multicomponent Reaction: Synthesis of Fused Pyrano Biscoumarin Analogs from 1,2-diols

A simple and efficient method has been developed for the synthesis of fused pyrano biscoumarins using lead tetraacetate as an oxidizing agent by the condensation of one equivalent of 1,2-diols and four equivalent of 4-hydroxy coumarin in acetonitrile as solvent at 80°C with good to excellent yields.

P2O5/SiO2 as a new, efficient and reusable catalyst for preparation of 4,4'-epoxydicoumarins under solvent-free conditions

An efficient solvent-free procedure for the preparation of 4,4'-epoxydicoumarins via the ondensation of 4-hydroxycoumarin with aldehydes in the presence of catalytic amount of phosphorus pentoxide/silica gel at 110 °C is described. The advantages of this

Cyanuric chloride-catalyzed one-pot synthesis of 4,4'-epoxydicoumarins

A simple, green and efficient solvent free procedure for the synthesis of 4,4'-epoxydicoumarins from 4-hydroxycoumarin and aldehydes | in the presence of catalytic amount of cyanuric chloride at 120° C is described. Using this method, 4,4'-epoxydicoumarin