Cross-Linked Polyamine from Imidazolium-Based Materials: A Simple Route to Useful Catalytic Materials

Vincenzo Campisciano, Anna Maria Pia Salvo, Michelangelo Gruttadauria, Francesco Giacalone, Leonarda Francesca Liotta, Alberto Spinella, Leonarda Francesca Liotta

Risultato della ricerca: Article

4 Citazioni (Scopus)

Abstract

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 (γ-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 by13C cross-polarization magic angle spinning NMR (13C CPMAS NMR), proton spin-lattice relaxation times in the rotating frame (T1ÏH) 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.
Lingua originaleEnglish
pagine (da-a)1352-1358
Numero di pagine7
RivistaEuropean Journal of Organic Chemistry
Volume2018
Stato di pubblicazionePublished - 2018

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry

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