期刊
RSC ADVANCES
卷 5, 期 91, 页码 74932-74939出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra11343a
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资金
- Yazd University Research Council
A simple and efficient procedure for the synthesis of 1,4-dihydropyrano[2,3-c] pyrazole derivatives has been developed by a one-pot three-component reaction of various aldehydes with malononitrile and 3-methyl-1-phenyl-2-pyrazoline-5-one in the presence of BF3/MNPs as a novel nanostructured, heterogeneous and reusable catalyst. In this research, BF3/MNPs nanoparticles were prepared at three calcination temperatures and characterized by various techniques. The characterization and optimization results show that the catalyst with a calcination temperature of 450 degrees C has the best catalytic activity. The nano-sized magnetite catalyst were recovered by simple separation with an external magnet and reused for several cycles without considerable loss of activity.
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