1.
J Chem Technol Biotechnol
; 57(4): 363-70, 1993.
Artículo
en Inglés
| MEDLINE
| ID: mdl-7763966
RESUMEN
The pyrimido[1,2-alpha]benzimidazole derivatives compounds 1-8 were synthesized through cyclocondensation of 2-aminobenzimidazole with the appropriate benzsubstituted benzoylacetone by fusion at 150-170 degrees C for 5 h. Quaternary salts compounds 9-22 were obtained by quaternization of compounds 1-8 with dimethyl or diethyl sulfate and subsequent isolation as the relatively insoluble perchlorate salts. Assignment and confirmation of the structures of the newly synthesized compounds were based upon elemental microanalyses and other spectral evidence.
Asunto(s)
Bencimidazoles/síntesis química , Compuestos Heterocíclicos/síntesis química , Pirimidinas/síntesis química , Bencimidazoles/química , Compuestos Heterocíclicos/química , Pirimidinas/química
2.
Analyst
; 112(6): 867-9, 1987 Jun.
Artículo
en Inglés
| MEDLINE
| ID: mdl-3619056