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- Title
Acid–Base Bifunctional Fiber as Highly Active Catalyst for the Tandem Deprotection-Knoevenagel Reaction.
- Authors
Chen, Ziyi; Ren, Bo; Wang, Lu; Zheng, Jiangyu; Shao, Boyu; Wu, Liying; Xiao, Jian; Wang, Yali
- Abstract
A serious of phenol and amine bifunctionalized polyacrylonitrile fibers have been prepared and used to catalyze the tandem deprotection-Knoevenagel reaction. Among them, the phenol and tertiary amine bifunctionalized polyacrylonitrile fiber (PANP-TAF) achieved the best catalysis activity. The PANP-TAF was characterized by Fourier-transfer infrared spectroscopy (FTIR), X-ray diffraction spectra (XRD) and elemental analysis (EA). The PANP-TAF can efficiently catalyze Knoevenagel condensation reaction of aromatic aldehydes and methyl cyanoacetateethyl cyanoacetate or malononitrile with high yields of 85%-99% and extensive substrate scope in water. Moreover, the PANP-TAF shows excellent reusablity (up to 15 times) without significant decrease of catalytic activity.
- Subjects
POLYACRYLONITRILES; CATALYTIC activity; AROMATIC aldehydes; CATALYSTS; X-ray spectra; BIFUNCTIONAL catalysis; INFRARED spectroscopy
- Publication
Catalysis Letters, 2024, Vol 154, Issue 4, p1451
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-023-04410-2