Details

Autor(en) / Beteiligte

• Rodríguez-Ramírez, C. A.
• Fascio, Mirta L.
• Agusti, Rosalía
• D’Accorso, Norma
• Garcia, Nancy Lis

Titel

Eco-friendly and efficient modification of native hemicelluloses via click reactions

Ist Teil von

• New journal of chemistry, 2023-01, Vol.47 (4), p.1777-1783

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This paper reports the functionalization of heterogeneous hemicelluloses from Tacuara cane using the “click reaction”. The synthesis was designed as a two-step strategy. The first step was the introduction of azido groups onto the backbone of hemicellulose by etherification of the natural polymer with 1-azido-2,3-epoxypropane to obtain HC-N 3 . In the second step, different terminal alkynes functionalized with aliphatic and aromatic groups were grafted onto HC-N 3 by copper-catalyzed azide–alkyne cycloaddition (CuAAC). Hemicellulose-based products were obtained in high yields and further characterized using spectroscopic (NMR- 1 H and ATR-FTIR), thermal (TGA) and chromatographic techniques (HPAEC) evidencing that click chemistry is an attractive modification strategy to graft hemicellulose with different molecules through a triazole ring. This methodology was designed as a possible approach to valorise native hemicelluloses and to facilitate their use as a potential platform to support different reagents or biomolecules.