PHOTODECHLORINATION OF CHLOROBIPHENYLS BY SODIUM METHYL SILICONATE

被引：10

作者：

HAWARI, J ^{[1
]}

TRONCZYNSKI, J ^{[1
]}

DEMETER, A ^{[1
]}

SAMSON, R ^{[1
]}

MOURATO, D ^{[1
]}

机构：

[1] SANIVAN GRP,ANJOU H1K 4E4,QUEBEC,CANADA

来源：

CHEMOSPHERE | 1991年 / 22卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0045-6535(91)90274-H

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sodium methyl siliconate is unreactive with 4-chlorobiphenyl in aqueous methanol in the dark, but the reaction to give biphenyl (85 %) occurs rapidly when stimulated by ultraviolet light (300 nm). In the absence of siliconate photolysis of 4-chlorobiphenyl for 10 h at 300 nm gave less than 5 % cleavage of the C-Cl bond. Deuterium labelling experiments and the inhibitory effects of oxygen were consistent with a single electron transfer (SET)-hydrogen abstraction mechanism. Dechlorination of polychlorobiphenyls, PCBs, by the above model proceeds with regioselectivity similar to that of nucleophilic aromatic substitution of polyhaloarenes.

引用

页码：189 / 199

页数：11

共 20 条

[1]

BICZOK L, UNPUB

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