Iminium salts 3 and 5 are accessible by alkylation or protonation of β-alkoxycarbonyl-enamines. They have been isolated and characterized by 1H NMR spectra. Their reaction products formed with nucleophiles such as organomagnesium or CH-acidic compounds (dimedone, acetophenone), are also investigated and shown partly to undergo secondary reactions under amine elimination.
亚胺盐3和5可通过β-烷氧基羰基-烯胺的烷基化或质子化而获得。它们已被分离并通过1 H NMR光谱进行了表征。还研究了它们与亲核试剂如
有机镁或CH酸性化合物(
二甲酮,
苯乙酮)形成的反应产物,并部分显示在胺消除下会发生二级反应。