1.
Mol Divers
; 12(3-4): 191-6, 2008.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18830679
RESUMO
A rapid and efficient one-pot method for the synthesis of 4,6-diarylpyrimidin-2(1H)-ones and related heterocycles is described. The condensation of acetophenone derivatives, aldehydes and urea in the presence of sulfamic acid was employed to synthesize a variety of pyrimidinones in moderate to excellent yields. The scope and limitations of this method are described.
Assuntos
Pirimidinonas/síntese química , Catálise , Conservação dos Recursos Naturais , Espectroscopia de Ressonância Magnética , Métodos , Estrutura Molecular , Pirimidinonas/química , Solventes , Espectrofotometria Infravermelho , Ácidos Sulfônicos
2.
Mol Divers
; 12(3-4): 181-5, 2008.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18780153
RESUMO
A rapid and efficient one-pot method for the synthesis of quinazolinone derivatives and related heterocycles by condensation of 2-amino benzimidazole and 3-amino-1,2,4-triazole, as amine sources, with dimedone and different aldehydes in the presence of H6P2W18O(62).18H2O as a green and reusable catalyst in refluxing acetonitrile has been developed.