Browsing by Author "Hoffmann, Norbert"

Now showing items 1-4 of 4

    • Photochemical Key Steps in thé Synthesis of Surfactants from Furfural-Derived Intermediates 

      Ernenwein, Cédric; Gassama, Abdoulaye; Hoffmann, Norbert (Elsevier, 2009)
      Le furfural est oxydé en 2 [5H] -furanone en utilisant du peroxyde d'hydrogène ou à la 5-hydroxy-2 [5H] -furanone par photo-oxygénation. Une fonction aminé est introduite par ajout radical d'aminés tertiaires, dont ...

    • Stereoselective Triplet-Sensitised Radical Reactions of Furanone Derivatives 

      Jahjah, Rabih; Gassama, Abdoulaye; Bulach, Véronique; Suzuki, Chikako; Abe, Manabu; Hoffmann, Norbert; Martinez, Agathe; Nuzillard, Jean-Marc (2010)
      The stereo- and regioselectivity of triplet-sensitised radical reactions of furanone derivatives have been investigated. Furanones 7 a,b were excited to the 3 pp* state by triplet energy transfer from acetone. Intramolecular ...

    • Sulfonated surfactants obtained from furfural 

      Gassama, Abdoulaye; Ernenwein, Cédric; Youssef, Ali; Agach, Mickaël; Riguet, Emmanuel; Marinkovic, Sinisa; Estrine, Boris; Hoffmann, Norbert (2013)
      Furfural obtained from pentose containing biomass such as hemicelluloses is subjected to photooxygenation. The resulting hydroxyfuranone obtained in high yields undergoes acetalization with fatty alcohols. Using NaHSO3, ...

    • Synthesis of surfactants from furfural derived 2[5H]-furanone and fatty amines 

      Gassama, Abdoulaye; Ernenwein, Cedric; Hoffmann, Norbert (2010)
      Furfural was oxidized to 2[5H]-furanone 2 using hydrogen peroxide. Furanone 2 was transformed with two equivalents of fatty amines. A condensation and a Michael reaction occurred. Ethyl bromoacetate 5 or methyl acrylate ...