SYNTHESIS AND CHARACTERIZATION OF HIGHLY SUBSTITUTED DEOXYFLUOROCELLULOSE ACETATE

被引：7

作者：

KASUYA, N ^{[1
]}

IIYAMA, K ^{[1
]}

ISHIZU, A ^{[1
]}

机构：

[1] UNIV TOKYO,FAC AGR,BUNKYO KU,TOKYO 113,JAPAN

来源：

CARBOHYDRATE RESEARCH | 1992年 / 229卷 / 01期

关键词：

D O I：

10.1016/S0008-6215(00)90485-3

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Deoxyfluorocellulose acetates were prepared from Cellulose acetate (CA, degree of substitution by acetyl groups: 2.2 and 1.7) by using diethylaminosulfur trifluoride (DAST) in 1,4-dioxane or diglyme. The maximum degree of substitution of fluorine of the products was approximately 0.60, and depolymerization was not significant during fluorination. The replacement of hydroxyl groups by fluorine atoms occurred exclusively at C-6, as confirmed by carbon-13 NMR spectroscopy. In the presence of pyridine, an N-pyridinium derivative of CA was obtained instead of a deoxyfluoro derivative of cellulose.

引用

页码：131 / 139

页数：9

共 15 条

[1] FLUORINATED CARBOHYDRATES .2. SELECTIVE FLUORINATION OF GLUCOPYRANOSIDES AND MANNOPYRANOSIDES - USE OF 2-D NMR FOR STRUCTURAL ASSIGNMENTS [J].