Nucleophilic Aromatic Substitution of Hydrogen in the Reaction oftert-Alkylamines with Nitrosobenzenes – Synthesis and NMR Study ofN-(tert-Alkyl)-ortho-nitrosoanilines
作者:Dmitriy L. Lipilin、Aleksandr M. Churakov、Sema L. Ioffe、Yuri A. Strelenko、Vladimir A. Tartakovsky
DOI:10.1002/(sici)1099-0690(199901)1999:1<29::aid-ejoc29>3.0.co;2-m
日期:1999.1
The reaction of primary amines bearing tertiary alkyl groups (e.g. R–NH2; R = tBu, 1-adamantyl) with nitrosobenzenes has been found to proceed by oxidative nucleophilic aromatic substitution of hydrogen, thereby affording N-(tert-alkyl)-ortho- and -para-nitrosoanilines. The replacement of hydrogen proceeds more rapidly than the replacement of ortho- or para-nitro or -bromo substituents. With p-nitronitrosobenzene
已发现带有叔烷基的伯胺(例如 R–NH2;R = tBu,1-金刚烷基)与亚硝基苯的反应是通过氢的氧化亲核芳族取代进行的,从而提供 N-(叔烷基)-邻-和-对亚硝基苯胺。氢的置换比邻-或对-硝基或-溴取代基的置换进行得更快。使用对亚硝基苯,两个邻位氢原子都被取代,得到 N,N'-二(叔烷基)-4-硝基-2-亚硝基-1,3-苯二胺 8a,b。氧化剂(例如MnO2)的添加提高了产品的产率。1H-、13C-、14N- 和 15N-NMR 研究证实了所研究化合物的结构。在邻亚硝基苯胺中,亚硝基与氨基同位的旋转异构体是有利的。