A NOVEL METHOD FOR THE SYNTHESIS OF PYRIMIDO[1,2-<i>a</i>]BENZIMIDAZOLES
DOI:
https://doi.org/10.1007/3165Keywords:
N-arylitaconimides, 1, 2-diaminobenzimidazole, methypyrrolidine-2, 5-dione, pyrimido[1, 2-a]benzimidazole, polynucleophilesAbstract
Condensation of 1,2-diaminobenzimidazole with N-arylitaconimides was studied. It was found that 2-(10-amino-N-aryl-2-oxo-2,3,4,10-tetrahydropyrimido[1,2-a]benzimidazol-3-yl)acetamides were formed in the course of this reaction upon brief heating to reflux of the reagent mixture in 2-propanol in the presence of catalytic amounts of acetic acid.
Authors: Dmitriy Yu. Vandyshev*, Khidmet S. Shikhaliev, Anna V. Kokonova, Andrei Yu. Potapov, Maria G. Kolpakova, Artem L. Sabynin, Fedor I. Zubkov