Sugar dihydroozaxole monomers with two free hydroxyl groups undergo acid-catalyzed polymerization to hyperbranched aminopolysaccharides [Eq. (a)]. Their molecular weights were determined by the light-scattering method to be between 2.3×10 and 7.6×10 . The degree of branching determined by H NMR spectroscopy after reaction with [iPr Si(Cl)] O is close to the ideal value. Ts=MeC H SO , CSA=10-camphorsulfonic acid.
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Synthesis of Hyperbranched Aminopolysaccharides.
Angew Chem Int Ed Engl
September 1998
Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University, Yonezawa, Yamagata 992-0038 (Japan), Fax: (+81) 238-26-3413.
Sugar dihydroozaxole monomers with two free hydroxyl groups undergo acid-catalyzed polymerization to hyperbranched aminopolysaccharides [Eq. (a)]. Their molecular weights were determined by the light-scattering method to be between 2.
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