J. Kadokawa, T. Horiguchi, E. Sunaga, M. Karasu, H. Tagaya, K. Chiba
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引用次数: 7
摘要
本文报道了以三苯基膦/四氯化碳/DBU体系为缩合剂，用二氧化碳缩合2-氨基-2-脱氧-α- d -氨基葡萄糖苷盐酸盐(1)得到聚氨酯(2)。在DMF溶剂中，在缩合剂存在的情况下，在CO2气氛下进行了1与CO2的缩合。从产物的核磁共振和红外光谱分析，聚合进行区域选择性形成2。2乙酰化后GPC测定分子量为2000-3000，对应DP = 5-8。
Regioselective polycondensation of benzyl 2-amino-2-deoxy-α-D-glucopyranoside hydrochloride with carbon dioxide
This paper reports the polycondensation of benzyl 2-amino-2-deoxy-α-D-glucopyranoside hydrochloride (1) with carbon dioxide using the triphenylphosphine/carbon tetrachloride/DBU system as a condensing agent to give poly(urethane) (2). The polycondensation of 1 with CO2 was carried out in DMF solvent in the presence of the condensing agent under CO2 atmosphere. From the NMR and IR analyses of the product, the polymerization proceeded regioselectively to form 2. The molecular weight was estimated as 2000–3000 by GPC measurement after acetylation of 2, corresponding to DP = 5–8.
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