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Utility of the Ditopic Nature of Magnetically Recyclable NiFe 2 O 4 Nano‐Catalyst for the Green Synthesis of Two Different Spiro[indoline‐pyrrolizine] Scaffolds
Author(s) -
Basu Soumyadip,
Kayal Utpal,
Maity Suvendu,
Ghosh Prasanta,
Bhaumik Asim,
Mukhopadhyay Chhanda
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802697
Subject(s) - indoline , catalysis , adsorption , nano , high resolution transmission electron microscopy , x ray photoelectron spectroscopy , materials science , chemical engineering , nuclear chemistry , nanotechnology , chemistry , organic chemistry , composite material , transmission electron microscopy , engineering
Environmentally benign and highly stable magnetic nano powder of NiFe 2 O 4 was synthesized and characterized by XRD, HRTEM, EDX and Nitrogen BET adsorption isotherm analysis. Also, XPS analysis confirmed the electronic environment as well as the oxidation state of the elements. The NiFe 2 O 4 catalyst was exploited in one‐pot three‐component synthesis of spiro[indoline‐3,3′‐pyrrolizine] and spiro[indoline‐3,5′‐pyrrolo[1,2‐c]thiazole] scaffolds, because of its ditopic nature which can provide both acidic (Fe 3+ ) and basic (O 2− ) properties, require for the reactions. The desirability of this methodology resides in its simplicity, environmental friendliness, cost effectiveness and easier scaling up for bulk synthesis. Water was utilised as a medium for synthesis of the catalyst as well as the medium of the reaction leading to the product. The synthesized NiFe 2 O 4 nanocatalyst can be recycled upto six times without any significant loss of activity.