Two highly efficient and general one-pot annulation reactions are described for the synthesis of dihydroimidazo- and imidazophenanthridinium salts (DIPs + and IPs +). These two methodologies exploit the difference in reactivity between primary amino-based or ammonia nucleophiles and the dielectrophilic starting material, 2-bromoethylphenanthridinium bromide.
报道了两种高效且通用的“一锅法”环化反应,用于合成二氢
咪唑并[二氢]
菲啶盐(DIPs⁺和IPs⁺)。这两种方法利用了基于
伯胺或
氨的亲核试剂与二电子亲电起始物2-
溴乙基
菲啶溴化物之间的反应活性差异。