A magnetically-separable H3PW12O40@Fe3O4/EN-MIL-101 catalyst for the one-pot solventless synthesis of 2H-indazolo[2,1-b] phthalazine-triones

Alireza Hashemzadeh, Mostafa M. Amini, Reza Tayebee, Atefeh Sadeghian, Lee J. Durndell, Mark A. Isaacs, Amin Osatiashtiani, Christopher M.A. Parlett, Adam F. Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A magnetic inorganic-organic catalyst, PTA@Fe3O4/EN-MIL-101 (EN = ethylenediamine, PTA = phosphotungstic acid) was fabricated and characterized by XRD, HRTEM, FESEM, UV–vis, 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.
Original languageEnglish
Pages (from-to)96-106
Number of pages11
JournalMolecular Catalysis
Volume440
Early online date5 Aug 2017
DOIs
Publication statusPublished - Oct 2017

Bibliographical note

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • metal-organic framework
  • magnetic nanoparticles
  • heteropolyacid
  • phthalazine-trione

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