REGIODIRECTED SYNTHESIS OF POLYFLUOROALKYLATED PYRIMIDO[1,2-<i>a</i>]BENZIMIDAZOLES
DOI:
https://doi.org/10.1007/1271Keywords:
2-aminobenzimidazole, 2-ethoxymethylidene-3-oxo-3-polyfluoroalkylpropionate, pyrimido[1, 2-a]benzimidazole, condensation, regiodirectionAbstract
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.
Authors: M. V. Goryaeva, Ya. V. Burgart, V. I. Saloutin, and O. N. Chupakhin.
English translation in Chemistry of Heterocyclic Compounds, 2012, 48 (2), pp 372-376