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mahmood tajbakhsh

mahmood tajbakhsh

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Faculty of Chemistry
Address: /Faculty of chemistry- University of Mazandaran- Babolsar- Iran
Phone: 09111146981

Research

Title
Dysprosium–balsalazide complex trapped between the functionalized halloysite and<i>g</i>‐C<sub>3</sub>N<sub>4</sub>: A novel heterogeneous catalyst for the synthesis of annulated chromenes in water
Type
JournalPaper
Keywords
Catalyst
Year
2022
Journal Applied Organometallic Chemistry
DOI
Researchers Golnaz Rahimzadeh ، mahmood tajbakhsh ، Mansoureh Daraie ، masoud mohammadi

Abstract

In this work, a complex of dysprosium and balsalazide was trapped between the functionalized g‐C3N4 and halloysite via a simple approach. The resulting [Hal‐BS/g‐C3N4‐Dy]‐heterogenized complex was characterized using FT‐IR, SEM, EDX, elemental mapping, XRD, ICP‐OES and TGA analysis. The catalytic activity of [Hal‐BS/g‐C3N4‐Dy] was examined in the synthesis of an array of biologically active pyran derivatives, i.e. the 2‐amino‐5,10‐dioxo‐4‐aryl‐5,10‐dihydro‐4H‐benzo[g]chromene‐3‐carbonitriles. This reaction was achieved in water as a green solvent under reflux condition. The desired products were obtained in excellent yields (up to 98%). In addition, the reusability of this novel catalyst was investigated for 8 cycles without losing catalytic activity and under the optimal reaction conditions. The ICP‐OES test demonstrated that there was no leaching of metal during the catalytic reaction, indicating the heterogeneous manner of the catalyst.