An efficient high-yield synthesis for perfluorinated tertiary alkyl amines
作者:Kyle W Felling、Richard J Lagow
DOI:10.1016/s0022-1139(03)00146-5
日期:2003.10
We wish to report a high-yield synthesis of perfluorinated tertiary amines from their hydrocarbon analogues by direct fluorination. Yields up to 70%, with high purities, have been obtained from certain tertiary amines. This technique will likely develop into a new general method for producing perfluorinated amines.
Electrochemical fluorination of 1-ethylpiperazine and 4-methyl- and/or 4-ethylpiperazinyl substituted carboxylic acid methyl esters
作者:Takashi Abe、Hajime Baba、Irina Soloshonok
DOI:10.1016/s0022-1139(00)00397-3
日期:2001.3
perfluoroacid fluorides with a perfluoro(4-alkylpiperazinyl) group were obtained in fair to good yields from the fluorination of methylesters of 4-alkylpiperazinyl-substituted carboxylicacids. Yields of the targeted perfluoro(4-alkylpiperazinyl) group containing perfluorocarboxylic acid fluorides varied depending on both the type of N-alkyl (alkyl=CH3− or C2H5−) group at the 4-position and the (ω-methoxycarbonylalkyl)
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
Described herein is fluorinated dye comprising: a fluorescing coumarin-derived moiety connected to an oligomer of hexafluoropropylene oxide via a non-fluorinated divalent linking group. Such fluorinated dyes are soluble in fluorinated fluids and may be used to detect leaks in various systems such as refrigerant, air conditioning and/or heat transfer systems.