R 35 Regiodirected synthesis of polyfluoro-alkylated pyrimido[1,2-a]benzimidazoles / M. V. Goryaeva, Ya. V. Burgart, V. I. Saloutin, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 2012. - Vol.48, №2. - С. 372-376 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SYNTHESIS -- BENZIMIDAZOLES -- CYCLIZATION Аннотация: Conditions have been found for the regiodirected cyclization of 2-aminobenzimidazoles using ethyl 3-oxo-3-polyfluoroalkyl-2-ethoxymethylidenepropionates at the ethoxymethylidenefluoroacyl fragment to give ethyl pyrimidobenzimidazole-3-carboxylates \\\\Expert2\\nbo\\Chemistry of Heterocyclic Compounds\\2012, v.48, N 2, p.372-376.pdf |