(searched for: (10.5155/eurjchem.2.3.311-313.414))
European Journal of Chemistry, Volume 2; doi:10.5155/eurjchem.2.3.311-313.414
Reaction of chalcone derivatives 1-4 with hydrazine hydrate in presence of formic acid yielded 2-pyrazolines 5-8. Structures of these compounds have been elucidated by spectroscopic methods; IR, UV, 1H NMR, 13C NMR. Their purities were confirmed by elemental analyses.