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- W2950803007 abstract "In this paper poly (4-methyl vinylpyridinium hydroxide)/SBA-15 composite was prepared as a highly efficient heterogeneous basic catalyst by in situ polymerization method for the first time. It was characterized by XRD, FT-IR, BET, TGA, SEM and back titration using NaOH. This catalyst exhibited the excellent catalytic activities for the Knoevenagel condensation of various aldehydes with ethyl cyanoacetate. Over this catalyst, <TEX>${alpha},{beta}$</TEX>-unsaturated carbonyl compounds were obtained in the reasonable yield at <TEX>$95^{circ}C$</TEX> in 10 - 30 min in <TEX>$H_2O$</TEX> as a solvent with a 100% selectivity to the condensation products. Catalyst could be easily recycled after the reaction and it could be reused without the significant loss of activity/selectivity performance. No by-product formation, high yields, short reaction times, mild reaction conditions and operational simplicity with reusability of the catalyst were the salient features of the present synthetic protocol. Presence of <TEX>$H_2O$</TEX> as a solvent was also recognized as a green method." @default.
- W2950803007 created "2019-06-27" @default.
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- W2950803007 date "2010-09-20" @default.
- W2950803007 modified "2023-09-29" @default.
- W2950803007 title "Synthesis, Characterization and Application of Poly(4-Methyl Vinylpyridinium Hydroxide)/SBA-15 Composite as a Highly Active Heterogeneous Basic Catalyst for the Knoevenagel Reaction" @default.
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- W2950803007 doi "https://doi.org/10.5012/bkcs.2010.31.9.2618" @default.
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