1.
J Chem Technol Biotechnol
; 57(4): 363-70, 1993.
Artigo
em Inglês
| MEDLINE
| ID: mdl-7763966
RESUMO
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.
Assuntos
Benzimidazóis/síntese química , Compostos Heterocíclicos/síntese química , Pirimidinas/síntese química , Benzimidazóis/química , Compostos Heterocíclicos/química , Pirimidinas/química
2.
Analyst
; 112(6): 867-9, 1987 Jun.
Artigo
em Inglês
| MEDLINE
| ID: mdl-3619056