IMINOPHOSPHORANES IN HETEROCYCLIC SYNTHESIS: SYNTHESIS OF PYRAZOLO[l,5-a]PYRIMIDINES, IMIDAZOU,2-b]-PYRAZOLE AND PYRAZOLO[l,5-6][l,2,4]TRIAZINE DERIVATIVES VTA INTERMOLECULAR AZA-WITTIG REACTIONS

摘要

-Series of pyrazolo[l,5-a]pyrimidine derivatives, imidazof 1,2-6]-pyrazole derivative and pyrazolo[l,5-b][l,2,4]triazine derivatives were obtained by the initial reaction of 5-(triphenylphosphoranylideneamino)-1H-pyrazole derivative with carbonyl compounds and hydrazonyl halides. The newly synthesized compounds were confirmed by spectral and analytical data.