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Piperazine‐functionalized nickel ferrite nanoparticles as efficient and reusable catalysts for the solvent‐free synthesis of 2‐amino‐4 H ‐chromenes
Author(s) -
Pourhasan Bahram,
MohammadiNejad Ahmad
Publication year - 2019
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800291
Subject(s) - chemistry , malononitrile , piperazine , catalysis , resorcinol , thermogravimetry , nanoparticle , solvent , nickel , ferrite (magnet) , aldehyde , nuclear chemistry , organic chemistry , inorganic chemistry , chemical engineering , physics , quantum mechanics , engineering
Piperazine‐functionalized nickel ferrite (NiFe 2 O 4 ) nanoparticles were synthesized as recoverable heterogeneous base catalysts using a routine method. The synthesized materials were characterized using various spectroscopic techniques such as infrared, X‐ray diffraction, scanning electron microscopy, energy‐dispersive X‐ray, thermogravimetry analysis, and vibrating sample magnetometry. Catalytic efficiency was investigated in the synthesis of 2‐amino‐4 H ‐chromene derivatives via a one‐pot three component reaction of aldehyde and malononitrile with β or α ‐naphthol/5‐methyle resorcinol under solvent‐free conditions with good to high yields. This method is operationally simple and has several advantages such as good to high yield, short reaction times, solvent‐free conditions, and easy synthesis. Moreover, the catalyst was recovered easily using an external magnet and reused three times without distinctive loss in catalytic activity.