含フッ素脂肪酸誘導体の合成と利用(第4報)

N-(ペルフルオロアシル)エチレンジアミンの加熱変化

抄録

There was a marked difference between the thermal behavior of N-(perfluoroacyl) ethylenediamine (NF) with R_f=C₃F₇- or C₇F₁₅- and that of conventional N-acylethylenediamine (NH), heating to 100240°C under nitrogen gas.
At low temperature, the cyclization rate of NF was slower than that of NH. The kind of product depended on n in a structure (-CF₂-)_n, where the main product was N, N'-bis (perfluoroacyl) ethylenediamine (NB) when n=3 and 2-(perfluoroalkyl)-2-imidazoline (FI) when n=7. At high temperature, defluorination occurred with heating longer than 3h, and the rate was accelarated by the addition of CaO.