Peroxy-acid oxidation of NN-disubstituted aminotetrafluoro-, amino-3-chlorotrifluoro-, and amino-3,5-dichlorodifluoro-pyridines
作者:S. M. Roberts、H. Suschitzky
DOI:10.1039/j39690001485
日期:——
Peroxy-acid oxidation of NN-disubstituted 4-aminotetrafluoropyridines occurred with rearrangement of the expected intermediate N-oxide to give the NNO-trisubstituted hydroxylamines. The 2,4-bis-(NN-disubstituted amino)trifluoropyridines gave the 2-mono-N-oxide only. The oxidation of NN-dialkylamino-3-chlorotrifluoro and -3,5-dichlorodifluoropyridines was also studied and the influence of the amino-
的过氧酸氧化NN二取代的4- aminotetrafluoropyridines发生与预期中间体的重排Ñ氧化物,得到NNO -三取代的羟胺。2,4-双-(NN-二取代的氨基)三氟吡啶仅给出2-单-N-氧化物。还研究了NN-二烷基氨基-3-氯三氟和-3,5-二氯二氟吡啶的氧化,并讨论了氨基和甲氧基和不同卤素对结果的影响。将所观察到的行为与五氯吡啶的类似衍生物进行比较和对比,并合理地解释了多卤代吡啶的行为差异。