The electrochemical fluorination of nitrogen-containing carboxylic acids. Fluorination of dimethylamino- or diethylamino-substituted carboxylic acid derivatives
The electrochemical fluorination of six derivatives of dimethylamino- or diethylamino-substituted carboxylicacids has been conducted. As the main fluorination products, cyclized and cleaved products as well as the desired N-containing perfluoroacid fluorides were formed, and their ratios depended on the chain length and the structure of the starting carboxylicacids, and the nature of the dialkylamino
The electrochemical fluorination of N-containing carboxylic acids (Part 4). Fluorination of methyl 3-dialkylamino-isobutyrates and methyl 3-dialkylamino-n-butyrates
作者:Takashi Abe、Haruhiko Fukaya、Eiji Hayashi、Yoshio Hayakawa、Masakazu Nishida、Hajime Baba
DOI:10.1016/0022-1139(93)03019-i
日期:1994.2
Several methylesters of 3-dialkylamino-substituted n- and isobutyric acids have been subjected to electrochemical fluorination to give the corresponding perfluoroacid fluorides. Dimethyl, diethyl, pyrrolidino, morpholino, piperidino and N-methylpiperazino groups were investigated as dialkylamino substituents. The structure/yield relationship was evaluated both in terms of the structure of the acid and
Six methyl esters of 3-dialkylamino-substituted propionic acids were subjected to electrochemicalfluorination to give the corresponding perfluoroacid fluorides. The following dialkylamino substituents were investigated: diethylamino, di-n-propyl-amino, di-n-butylamino, pyrrolidino, morpholino and piperidino groups. These perfluoroacid fluorides, which were obtained in fair yields, are considered to
将3-二烷基氨基取代的丙酸的六种甲酯进行电化学氟化,得到相应的全氟代氟化物。研究了以下二烷基氨基取代基:二乙基氨基,二正丙基氨基,二正丁基氨基,吡咯烷基,吗啉代和哌啶子基。这些以合理收率获得的全氟酸氟化物被认为是制备软质(可降解)含氟化合物的潜在关键前体。这些盐在水溶液中显示出明显降低的表面张力。报告了所获得的所有全氟酸氟化物的物理性质,以及它们的光谱数据(19 F NMR,质谱和IR光谱)。
The electrochemical fluorination of nitrogen-containing carboxylic acids. Fluorination of methyl esters of cyclic amino-group substituted carboxylic acids
作者:Takashi Abe、Eiji Hayashi、Haruhiko Fukaya、Hajime Baba
DOI:10.1016/s0022-1139(00)80494-7
日期:1990.11
Nine methyl esters of cyclic amino-group substituted carboxylic acids related to glycine, alanine or β-alanine were subjected to electrochemicalfluorination. This afforded the corresponding perfluoroacid fluorides together with cleavage products in fair yields. As cyclic amino-substituents, pyrrolidino-, morpholino-, piperidino-, hexamethyleneimino- and N′-methyl-piperazinyl-groups were investigated
对与甘氨酸,丙氨酸或β-丙氨酸有关的环状氨基取代的羧酸的九种甲酯进行电化学氟化。这样以合理的产率得到了相应的全氟氟化物和裂解产物。作为环状氨基取代基,研究了吡咯烷基,吗啉代,哌啶子基,六亚甲基亚氨基和N'-甲基哌嗪基。未观察到环化副产物的形成,这与脂族二烷基氨基取代的羧酸的氟化形成对比。从这样的2-环氨基丙酸甲酯[环氨基:吡咯烷基,吗啉代或哌啶子基],与全氟酸氟化物一起得到全氟甲基酯,产率为1-2%和14-29。 % 分别。前一种化合物的形成归因于庞大的环状氨基的阻断作用。报告了所获得的新化合物的物理性质及其光谱(19 F NMR,质量和IR)数据。
Electrochemical fluorination of several methyl and/or ethyl esters of morpholino-substituted carboxylic acids
by the α-bond cleavage of the carboxylic acid and also by the kind of alkyl group of the carboxylic acid (the latter offering the possibility of cyclization side reactions). Perfluorooxolanes were formed as a major cyclization by-product from the ECF of morpholino-substituted carboxylic acids when the chain length of the alkyl group of the carboxylic acids had a carbon number of three or more and the