Details

Autor(en) / Beteiligte

• Sari-Chmayssem, N
• Pessel, F
• Guégan, J. P
• Taha, S
• Mawlawi, H
• Benvegnu, T

Titel

Direct and one-pot conversion of polyguluronates and alginates into alkyl-l-guluronamide-based surfactant compositionsElectronic supplementary information (ESI) available: 1H NMR, 13C (JMod) of guluronate monomers 1-3 and fractions enriched in α or β furanosides or pyranosides in the d-mannuronamide or l-guluronamide series, isolated after silica gel column chromatography of the GulC4N12, GulC4N18, AlgC4N12 and AlgC4N18 compositions. See DOI: 10.1039/c6gc01983h

Erscheinungsjahr

2016-12

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We describe here an efficient one-pot process for the synthesis of 100% bio-based l -guluronic acid based surfactant compositions as emulsion stabilizers, directly from l -polyguluronate or whole alginate, a renewable polysaccharide extracted from brown seaweeds. The transformation of these polymers into long-chain alkyl- l -guluronamides associated with d -mannuronamides when the alginate was used, has been achieved through the preparation of n -butyl uronate monosaccharide intermediates involving methane sulfonic acid-promoted hydrolysis, Fisher glycosylation and esterification reactions, followed by an in situ solvent-free aminolysis reaction with fatty amines. One-pot transformation of l -polyguluronates or alginates into 100% bio-based surfactants proceeded efficiently to provide novel long-chain alkyl- l -guluronamide/ d -mannuronamide compositions as emulsion stabilizers.