高等学校化学研究 ›› 1998, Vol. 14 ›› Issue (2): 194-198.
WU Cheng-pei1, PAN Cai-yuan1, Toshiyuki-Uryu2
WU Cheng-pei1, PAN Cai-yuan1, Toshiyuki-Uryu2
摘要: Two kinds of 1,4-anhydroribose derivatives, 1,4-anhydro 2,3-O-benzylidene-α-D-ribopyranose (ABRP) and 1,4-anhydro 2,3-O-isopropylidene α D ribopyranose (AIRP) were prepared from D-ribose. The ring-opening copolymerizations of ABRP and AIRP in various feed ratios were carried out with SbCl5 and BF3OEt2 as catalyst at low temperatures. The copolymer structure was characterized by means of 1H,13C NMR spectroscopy and specific rotation. When SbCl5 was used as catalyst, the copolymer obtained had completely 1,4-β-pyranosidic structure, i.e., cellulose type structure. However, when BF3OEt2 was used as catalyst, the copolymer had a mixed structure of furanosidic and pyranosidic units.