382-27-4Relevant academic research and scientific papers
Simons electrochemical fluorination of substituted homopiperazines(hexahydro-1,4-diazepines) and piperazines
Abe, Takashi,Baba, Hajime,Fukaya, Haruhiko,Tamura, Masanori,Sekiya, Akira
, p. 27 - 38 (2007/10/03)
Simons electrochemical fluorination (ECF) of 1,4-dimethyl-1,4-homopiperazine, methyl 4-ethylhomopiperazin-1-ylacetate and 1,4-bis(methoxycarbonylmethyl)-1,4-homopiperazine was studied. For comparison, ECF of three piperazines with a N-(methoxycarbonylmethyl) group(s) was also studied. ECF of 1,4-dimethyl-1,4-homopiperazine gave a low yield of corresponding perfluoro(1,4-dimethyl-1,4-homopiperazine) together with perfluoro(2,6-diaza-2,6-dimethylheptane) as the major product. Corresponding perfluoro(homopiperazines) with mono- and/or di-(fluorocarbonyldifluoromethyl) groups [-CF2C(O)F] at the 1- and/or 4-position were formed in low yields from methyl 4-ethylhomopiperazin-1-ylacetate and 1,4-bis(methoxycarbonylmethyl)-1,4-homopiperazine, respectively. These new seven-membered perfluoro(1,4-dialkyl-1,4-homopiperazines) were accompanied by the formation of mono- and/or di-basic linear perfluoroacid fluorides resulting from the C-C bond scission at the 2- and 3-positions of the ring. From mono- and/or di-N-(methoxycarbonylmethyl)-substituted piperazines, corresponding perfluoropeperazines having the acid fluoride group(s) were formed in low yields.
Electrochemical fluorination of di- and tri-(2-hydroxyethyl)-substituted alkylamines
Abe, Takashi,Soloshonok, Irina,Baba, Hajime,Sekiya, Akira
, p. 51 - 57 (2007/10/03)
Several 2-(hydroxyethyl)-substituted alkylamines like 1,4-bis(2-hydroxyethyl)piperazine, N,N-bis(2-hydroxyethyl)methylamine, N,N-bis(2-hydroxyethyl)ethylamine, and N,N,N-tris(2-hydroxyethyl)amine as well as their derivatives (HCl salts, a borate and trimethylsilylethers) were subjected to electrochemical fluorination. From 1,4-bis(2-hydroxyethyl)piperazine, F-[1,4-bis(fluorocarbonylmethyl)piperazine] was obtained in low yield. In the fluorination of N,N-bis(2-hydroxyethyl)alkylamines and N,N,N-tris(2-hydroxyethyl)amine, cyclization occurred extensively, affording large quantities of F-morpholine derivatives. However, F-N,N-bis(fluorocarbonylmethyl)methylamine was obtained from the former in low, isolated yield.
