STUDIES WITH POLYFUNCTIONALLY SUBSTITUTED HETEROCYCLES - NEW SYNTHESIS OF PYRIDO[5',4' 2,3][1,3,4]OXADIAZOLO[3,2-A]PYRIDINE, PYRIDAZINE, 1,3,4-OXADIAZOLE, AND PYRAZOLO[1,5-A]PYRIMIDINE DERIVATIVES/

Authors
BARSY MA ELMAGHRABY MA AHMED SM
Citation
Ma. Barsy et al., STUDIES WITH POLYFUNCTIONALLY SUBSTITUTED HETEROCYCLES - NEW SYNTHESIS OF PYRIDO[5',4' 2,3][1,3,4]OXADIAZOLO[3,2-A]PYRIDINE, PYRIDAZINE, 1,3,4-OXADIAZOLE, AND PYRAZOLO[1,5-A]PYRIMIDINE DERIVATIVES/, Journal of the Chinese Chemical Society (Taipei), 45(5), 1998, pp. 655-658
Citations number
6
Categorie Soggetti
Chemistry
Journal title
Journal of the Chinese Chemical Society (Taipei) → ACNP
ISSN journal
00094536
Volume
45
Issue
5
Year of publication
1998
Pages
655 - 658
Database
ISI
SICI code
0009-4536(1998)45:5<655:SWPSH->2.0.ZU;2-K
Abstract
Cyanoacetohydrazide 1a reacts with 2-arylhydrazoketons 2a,b and 3a,b i n refluxing ethanol to yield pyrido[5',4':2,3][1,3,4]oxadiazolo[3,2-a] pyridine and pyridazine derivatives; in the absence of solvent pyrazol o[ 1,5-a]pyrimidine derivatives were obtained. The reaction of 2a,b an d 3a,b with benzoylhydrazine afforded 1,3,4-oxadiazole and pyrazole de rivatives.