Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2018, Issue 11, Pages 1352-1358Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201800040
Keywords
Amines; Heterogeneous catalysis; Ionic liquids; Materials science; Polymers
Categories
Funding
- University of Palermo
Ask authors/readers for more resources
Cross-linked polyamine-based materials were easily prepared by reduction of the corresponding cross-linked imidazolium-based materials with sodium borohydride in hot ethanol. Overall, the synthetic procedure is based on the polymerization of a suitable bis-vinylimidazolium salt with or without a suitable support, such as silica or silica-coated magnetic nanoparticles (-Fe2O3@SiO2), followed by reduction. This simple approach allows the synthesis of materials based on a network of secondary and tertiary amines. Materials were characterized by C-13 cross-polarization magic angle spinning NMR (C-13 CPMAS NMR), proton spin-lattice relaxation times in the rotating frame (T1H) and thermogravimetric analysis (TGA). Cross-linked polyamine-based materials were used as recoverable catalyst for Knoevenagel reaction. High yields of the condensation products were obtained and up to 11 cycles were carried out.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available