A magnetically-separable H 3 PW 12 O 40 @Fe 3 O 4 /EN-MIL-101 catalyst for the one-pot solventless synthesis of 2H-indazolo[2,1- b ] phthalazine-triones

Abstract

A magnetic inorganic-organic catalyst, PTA@Fe3O4/EN-MIL-101 (EN=ethylenediamine, PTA=phosphotungstic acid) was fabricated and characterized by XRD, HRTEM, FESEM, UVVis, TGA-DTA, FT-IR, XPS and porosimetry. PTA retained the parent Keggin structure upon dispersion throughout the amine-functionalized chromium terephthalate metal-organic framework, over which magnetic Fe3O4 nanoparticles were previously introduced. The resulting composite heterogeneous solid acid was an active catalyst for the one-pot synthesis of diverse 2H-indazolo[2,1-b] phthalazine-triones in goodexcellent yields under mild, solventless condition, and offers facile separation and excellent recyclability.

Dimpled SiO2@γ-Fe2O3 nanocomposites – fabrication and use for arsenic adsorption in aqueous medium

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Magnetic Nanoparticle Composites: Synergistic Effects and Applications

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One Pot Synthesis, Characterization of Benzothiazole/ Benzimidazole Tethered Imidazole Derivatives using Clay as Catalyst

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