STUDIES WITH POLYFUNCTIONALLY SUBSTITUTED HETEROCYCLES - NOVEL SYNTHESIS OF PYRAZOLO[1,5-A]PYRIMIDINE, TRIAZOLO-[1,5-A]PYRIMIDINE AND PYRANOOXAZOLE DERIVATIVES

Authors
KANDEEL ZE FARAG AM NEGM AM KHALAFALL AK RASSLAN MAM ELNAGDI MH
Citation
Ze. Kandeel et al., STUDIES WITH POLYFUNCTIONALLY SUBSTITUTED HETEROCYCLES - NOVEL SYNTHESIS OF PYRAZOLO[1,5-A]PYRIMIDINE, TRIAZOLO-[1,5-A]PYRIMIDINE AND PYRANOOXAZOLE DERIVATIVES, Journal of chemical research. Synopses, (11), 1994, pp. 416-417
Citations number
14
Categorie Soggetti
Chemistry
Journal title
Journal of chemical research. Synopses → ACNP
ISSN journal
03082342
Issue
11
Year of publication
1994
Pages
416 - 417
Database
ISI
SICI code
0308-2342(1994):11<416:SWPSH->2.0.ZU;2-M
Abstract
2-Phenyl-4-phenylmethylideneoxazol-5(4H)-one (1a) reacts with heterocy clic amines to yield pyrazolo[1,5-a]pyrimidine (6) and 1,2,3-triazolo[ 1,5-a]pyrimidine (11) derivatives; pyrano[2,3-d]oxazoles (24) were pre pared via reaction of 2-phenyloxazol-5(4H)-one (21) with alkylidenemal ononitriles (22e,f).