Condensations of 1,4-Cyclohexanediones and Secondary Aromatic Amines. II.<i>N</i>-Phenylation of Diarylamines
作者:Kazuo Haga、Katsumasa Iwaya、Ryohei Kaneko
DOI:10.1246/bcsj.59.803
日期:1986.3
The condensations of 1,4-cyclohexanedione with several diphenylamines were investigated in order to determine the limit of the utility of this reaction for the N-phenylation of aromatic secondary amines. 4-Methoxy-, 4,4′-dimethyl-, and 4,4′-dibromodiphenylamines produced their N-phenylated compounds in fairly good yields, but 4-hydroxy-, 3-methoxy-, and 4,4′-bis(dimethylamino)diphenylamines produced
研究了 1,4-环己二酮与几种二苯胺的缩合反应,以确定该反应在芳族仲胺 N-苯基化反应中的应用极限。4-甲氧基-、4,4'-二甲基-和 4,4'-二溴二苯胺以相当好的产率生产它们的 N-苯基化化合物,但 4-羟基-、3-甲氧基-和 4,4'-双(二甲氨基)二苯胺的产率很低。硝基取代的二苯胺与 N-4-羟基苯基衍生物一起以低产率得到 N-苯基衍生物。N,N'-二苯基-对苯二胺和N,N'-二苯基联苯胺以良好的产率得到相应的四-N-苯基二胺。还研究了 N-苯基-1-萘胺、N-苯基-2-萘胺、二-2-吡啶胺、吩噻嗪和咔唑与 1,4-环己二酮的缩合。