ELECTROCHEMICAL REDUCTION OF BENZAL CHLORIDE IN THE PRESENCE OF CARBON-DIOXIDE

被引:20
作者
WAWZONEK, S
SHRADEL, JM
机构
[1] Department of Chemistry, University of Iowa, Iowa City
关键词
carboxylation; dimethylformamide; mandelic acid;
D O I
10.1149/1.2129051
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The electrochemical reduction of benzal chloride in the presence of carbon dioxide in dimethylformamide formed mandelic acid, benzyl mandelate, and benzyl phenylacetate. The maximum yield of mandelic acid was 9.8% if the reduction was carried out at -2.0V and the acid was isolated as the methyl ester. Studies on the mechanism of formation of mandelic acid or its benzyl ester indicated that the intermediate α-chlorophenylacetate ion formed an α-lactone which reacts with moisture in the dimethylformamide and gives the products isolated. Phenylcarbene as an intermediate was probably a minor contributor in the formation of mandelic acid. © 1979, The Electrochemical Society, Inc. All rights reserved.
引用
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页码:401 / 403
页数:3
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