文献类型：期刊文献

英文题名：STUDIES ON STRUCTURAL EFFECTS OF THE REACTION BETWEEN MODEL VINYLSULFONE REACTIVE DYES AND METHYL-ALPHA-D-GLUCOSIDE .2. KINETIC-STUDIES

作者：ZHU, ZH; ZHU, WP

年份：1994

卷号：25

期号：2

起止页码：87

外文期刊名：DYES AND PIGMENTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1994PC80500002)】；

语种：英文

摘要：The reactions between five vinylsulfone reactive dyes and methyl-alpha-D-glucoside have been studied in aqueous dioxan; the reaction products (D6 and D4) were separated by TLC-double scanning. It is shown that only the C6 and C4 hydroxyl groups are involved, with neither D2 nor D3 being formed. The rates of 'model' dyeing reactions were determined. The rates of alkaline hydrolysis of the reaction products D6 and D4 were measured kinetically. It was found that when some substituents are present in the aromatic ring, the reactivity of the vinylsulfone group is varied. The rate constants of the model dyeing reaction and the alkaline hydrolysis of the model 'dye-fiber' compounds changed, while the ratio of primary product to secondary product (i.e. k6'/k4') increased in the model 'dye-fiber' compound when a donor substituent, such as -OCH3, was present ortho- and para- to the vinylsulfone group.