The direct alkylation of -toluidine, as a model of aromatic amines, with 1,3-, 1,4-, 1,5- and 1,6-ditosylates, -dibromides or -dimesylates in HMPA as solvent affords the corresponding cyclic amines. The convenience of this reaction and some observed limitations are discussed.
作为芳族胺的模型,对甲
苯胺的直接烷基化用HMPA中的1,3-,1,4-,1,5-和1,6-二
甲苯磺酸酯,-二
溴化物或-二
甲苯磺酸酯作为溶剂提供了相应的环状胺。讨论了该反应的便利性和一些观察到的局限性。