Difructose dianhydrides from sucrose and fructo-oligosaccharides and their use as building blocks for the preparation of amphiphiles, liquid crystals, and polymers
Abstract Controlled selective protonic activation of the fructosyl moiety in sucrose and fructo- oligosaccharides, with pyridinium poly (hydrogen fluoride) at 20 C, yielded either the kinetic product α-d-fructofuranose β-d-fructofuranose 1, 2′: 2, 1′-dianhydride (1), or its thermodynamically more stable isomer α-d-fructofuranose β-d-fructopyranose 1, 2′: 2, l′- dianhydride (2), depending on the hydrogen fluoride-pyridine ratio. A similar reaction was ...
