Phototransformation of 3-hydroxybenzonitrile in water

被引：29

作者：

Bonnichon, F ^{[1
]}

Richard, C ^{[1
]}

机构：

[1] Photochim Mol & Macromol Lab, CNRS, UMR 6505, F-63177 Clermont Ferrand, France

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1998年 / 119卷 / 01期

关键词：

3-hydroxybenzonitrile; phototransformation; water; photoisomerization; photoionization;

D O I：

10.1016/S1010-6030(98)00382-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photolysis of 3-hydroxybenzonitrile in water yields 2-amino-5-hydroxybenzaldehyde (I), 3-hydroxybenzaldehyde (II) and cyanohydroquinone (III). I is only observed at pH < 4 whereas II is yielded whatever the pH. Oxygen has no influence on the formation of I but partly inhibits that of II. III is only observed in oxygenated solutions and at pH < 7. The photoionization is likely to be the primary step in the mechanism of formation of II and III. On the other hand, the production of I might be explained by the photoisomerization of 3-hydroxybenzonitrile into a cyclic imine followed by hydrolysis. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：25 / 32

页数：8

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