N,N,N′-Trialkyl-1,8-diaminonaphthalenes: convenient method of preparation from protonated proton sponges and the first X-ray information
作者:V.A. Ozeryanskii、A.F. Pozharskii、M.G. Koroleva、D.A. Shevchuk、O.N. Kazheva、A.N. Chekhlov、G.V. Shilov、O.A. Dyachenko
DOI:10.1016/j.tet.2005.02.067
日期:2005.4
A simple procedure for the synthesis of N,N,N′-trialkyl-1,8-diaminonaphthalenes is described. It consists in partial demethylation (dealkylation) of commercially available proton sponge [1,8-bis(dimethylamino)naphthalene] and some of its derivatives at heating with HBr–KI–DMF system. Limitation, scope and a possible mechanistic pathway for the reaction are discussed. For isomeric 8-dimethylamino-1-methylamino-
描述了合成N,N,N'-三烷基-1,8-二氨基萘的简单程序。它包括用HBr – KI – DMF系统加热时,可商购的质子海绵[1,8-双(二甲基氨基)萘]及其一些衍生物的部分脱甲基(脱烷基)反应的局限性,范围和可能的反应机理。讨论。对于异构体8-二甲基氨基-1-甲基氨基-和1-二甲基氨基-8-甲基氨基-4-硝基萘,已经进行了X射线测量。报道了在萘质子海绵中完全实现反应的第一个例子。