The reaction of N1-acetylacetamidrazones 1 with N-[bis(methylthio)methylene]cyanamide (2) at room temperature in the presence of potassium carbonate in dimethyl sulfoxide affords good yields of ethyl 4-acylhydrazino-2-amino-6-methylthio-5-pyrimidine carboxylate 3. By briefly refluxing compounds 3 in dimethyl sulfoxide, 1,2,4-triazolo[4,3-c]pyrimidine derivatives 4 were obtained. When equimolecular amounts of N1-acylacetamidrazones and compounds 2 were refluxed in dimethyl sulfoxide/toluene, compounds 4 were obtained directly.

1,2,4-Triazolo[4,3-c]pyrimidines from 4-acylhydrazinopyrimidines.

CONGIU, CENZO;ONNIS, VALENTINA
1992-01-01

Abstract

The reaction of N1-acetylacetamidrazones 1 with N-[bis(methylthio)methylene]cyanamide (2) at room temperature in the presence of potassium carbonate in dimethyl sulfoxide affords good yields of ethyl 4-acylhydrazino-2-amino-6-methylthio-5-pyrimidine carboxylate 3. By briefly refluxing compounds 3 in dimethyl sulfoxide, 1,2,4-triazolo[4,3-c]pyrimidine derivatives 4 were obtained. When equimolecular amounts of N1-acylacetamidrazones and compounds 2 were refluxed in dimethyl sulfoxide/toluene, compounds 4 were obtained directly.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/110323
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 7
social impact