The catalytic effect of anion-exchanged supported ionic liquid on aza-Michael-type addition

An effective synthesis of anion-exchanged supported ionic liquids using diatomaceous earth as solid support and its catalytic effect on the aza-Michael-type addition is described. Anionic polytungstophosphate and bisulfate ion are used in the anion-exchange step in catalyst design. In addition, the...

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Bibliographic Details
Published in:Research on chemical intermediates 2017-07, Vol.43 (7), p.3691-3709
Main Authors: Ghasemi, Mohammad Hadi, Kowsari, Elaheh
Format: Article
Language:English
Subjects:
Amines
Anion exchanging
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Design engineering
Design for recycling
Diatomaceous earth
Fourier transforms
Infrared spectroscopy
Inorganic Chemistry
Ionic liquids
Ions
Mass spectroscopy
Physical Chemistry
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Summary:An effective synthesis of anion-exchanged supported ionic liquids using diatomaceous earth as solid support and its catalytic effect on the aza-Michael-type addition is described. Anionic polytungstophosphate and bisulfate ion are used in the anion-exchange step in catalyst design. In addition, the aza-Michael-type addition of various amines to 2- and 4-vinyl pyridine was examined in this article. The catalytic system can be separated from the reaction mixture and recycled in subsequent reactions. The structure of anion-exchanged supported ionic liquid on diatomaceous earth was studied by XRD, FT-IR, SEM, TGA and BET techniques. The structure of organic products was determined by 1 HNMR, 13 CNMR, FTIR, CHN and MASS spectroscopy. Graphical Abstract
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-016-2840-0