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。
Highly fluorinated heterocycles part XV [1]. The metal catalysed defluorinative rearrangement of polyfluorinated pyrrolidines to polyfluoropyridines
作者:P.L. Coe、J.H. Sleigh
DOI:10.1016/s0022-1139(00)81785-6
日期:1981.4
Pyrolysis of a number of polyfluoro-1-alkyl pyrrolidines over iron gauze at 500–525° affords a small conversion to polyfluoropyridines.
Fluorinations with potassium tetrafluorocobaltate(III) Part VII. Further investigations on the fluorination of pyridine
作者:Paul L. Coe、Andrew G. Holton、John Colin Tatlow
DOI:10.1016/s0022-1139(00)81240-3
日期:1982.10
The product from the fluorination of pyridine by KCoF4 at ca. 220° contains eleven fluoropyridines, two fluoro-2-azahex-enes, three azahexa- dienes, and two fluoro-N-methylpyrrolidines, besides an azacyclohexa-1,3- diene. Four products were isolated from a fluorination of pyridine by CoF3 at ca. 150°, a 2-azahexene, two N-methylpyrrolidines, and 4H-nona- fluoropiperidine.
Highly fluorinated heterocycles. Part XVI. Polyfluorinated derivatives of 1-methylpyrrolidine, 1-methylpyrrol-3-ine and 1-methylpyrrole
作者:Paul L. Coe、Andrew G. Holton、John H. Sleigh、Peter Smith、John Colin Tatlow
DOI:10.1016/s0022-1139(00)84958-1
日期:1983.3
Fluorination of 1-methylpyrrole with cobalt(III) fluoride gave six major products, 1-fluoromethyl- and 1-difluoromethyl- -octa-, -3H-hepta-, and -3H,4H-hexa-fluoropyrrolidine. Similar fluorination of 1-methyl- pyrrolidine gave better total recoveries of the same six products, together with 1-trifluoromethyloctafluoropyrrolidine, and 1-fluoromethyl- and 1-difluoromethyl- -2H-heptafluoropyrrolidine.