Electrolytic partial fluorination of organic compounds. Part 29. Anodic mono- and difluorination of 2-benzoxazolyl sulfides

被引:16
作者
Dawood, KM [1 ]
Higashiya, S [1 ]
Hou, Y [1 ]
Fuchigami, T [1 ]
机构
[1] Tokyo Inst Technol, Dept Elect Chem, Midori Ku, Yokohama, Kanagawa 2268502, Japan
关键词
selective anodic fluorination; benzoxazolyl sulfides; fluoride salt; dimethoxyethane;
D O I
10.1016/S0022-1139(98)00292-9
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Anodic fluorination of 2-benzoxazolyl sulfides using various fluoride salts and dimethoxyethane as a supporting electrolyte and a solvent, respectively, resulted in the formation of the corresponding mono- and difluorinated products in reasonable yields. The monofluorination took place selectively at the position alpha to the sulfur atom while the difluorination resulted at both the alpha-position and the benzene ring while the expected alpha,alpha-difluorination did not take place at all. Moreover, anodic fluorination of the electrolytic solvent, DME, which has never been reported so far, was also observed as a side-reaction and this fluorination was further confirmed by carrying out anodic fluorination of DME itself in the absence of a substrate sulfide. (C) 1999 Elsevier Science S.A. All rights reserved.
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页码:159 / 164
页数:6
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