In this paper,an unreported novel acylpyrazolone——1-(p-Cl-phenyl)-3-phenyl-4-benzoyl-pyrazolone-5(CPPBP) and its five Schiff bases have been synthesized in the nonaqueous solvent.Their molecular structures are characterized by the elemental analysis,IR,MS and 1H NMR and an elementary antibacterial activity experiment is made.The results of structural characterization show that CPPBP exist in ketoform structure mainly and other five compounds S1,S2,S3,S4 and S5 coexisted in ketoform and enolform structure after forming the schiff bases.The antibacterial avtivity experiment indicat that six compounds are resistant to four different bacteria with various degrees.
A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general formula of the complexes, ·nH2O (RE=La, Nd, Eu, Tb, Y, n=2; RE= Pr, Sm, n=1; RE= Dy, Er, Yb, n=3), is given. They were characterized by IR, UV-visible, 1H NMR, 13C NMR and fluorescence. The results show that the rare earth ions exhibit coordination of eight in the complexes.The antibacterial experiments indicate that they have high antibacterial activities against S. Aureus, B. Subtillis, E. Coli, E. Carotovora and C. Flaccumfaciens.
