Difference in the electrochemical behavior of three isomeric phthalaldehydes

被引:10
作者
Bover, WJ [1 ]
Baymak, MS [1 ]
Camaione, L [1 ]
Zuman, P [1 ]
机构
[1] Clarkson Univ, Dept Chem, Potsdam, NY 13695 USA
关键词
polarography; isophthalaldehyde; terephthalaldehyde; orthophthalaldehyde; covalent hydration; amino acids;
D O I
10.1016/S1388-2481(03)00064-X
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Polarographic current-voltage curves enabled distinguishing between the degree of covalent hydration of iso-, tere-, and orthophthalaldehydes. Hydration, which is negligible for isophthalaldehyde, strong for terephthalaldehyde and very strong for orthophthalaldehyde, together with acid-base reactions, affect the electrolysis of each of the three isomers differently. In solutions of orthophthalaldehyde polarography enables simultaneous following of concentrations of the unhydrated, acyclic monohydrated, cyclic hemiacetal forms. Each of these forms react with amino acids by a different rate. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:334 / 336
页数:3
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