Pyridazine Derivatives, IX. Synthesis of 2H-Pyridazin-3-ones with Aroylpiperazinyl Groups
作者:Enrique Ravina、Carmen Teran、Lourdes Santana、Neftali Garcia、Isabel Estevez
DOI:10.3987/com-90-5493
日期:——
-Several 2H-pyridazin-3-ones with phenyl- or 2-furoylpiperazinyl group, have been prepared. 6-Phenyl-5-(N4-aroyl-N1-piperazinyl)-2H-pyridazin-3-ones were obtained by nucleophilic substitution of the chlorine atom of 6-phenyl-5-chloro-2H-pyridazin-3-one or alternatively, by aroylation of N1-piperazinyl-2h-pyridazin-3-one. Also, 6-phenyl-5-(N4-aroyl-N1-piperazinylmethyl)-2H-pyridazin-3-ones were prepared by displacement of the bromine in 6-phenyl-5-bromomethyl-2h-pyridazin-3-one.