Four new acylhydrazones containing carboxyl,3a3d,were synthesized and their compositions and structures were characterized with elemental analysis, MS,IR and 1H NMR spectra.Their bacterio-（static） activities against...Four new acylhydrazones containing carboxyl,3a3d,were synthesized and their compositions and structures were characterized with elemental analysis, MS,IR and 1H NMR spectra.Their bacterio-（static） activities against staphylocus auteus,escherichia coil and bacillus subtilis were studied by Kirby-Bauer method.展开更多
The 2-(carboxymethoxyl)benzaldehyde benzoyl hydrazone(H 2L) was prepared by condensation of O-formylphenoxy acetic acid with benzoyl hydrazine in ethanol. Eight rare earth complexes with H 2L were synthesized in metha...The 2-(carboxymethoxyl)benzaldehyde benzoyl hydrazone(H 2L) was prepared by condensation of O-formylphenoxy acetic acid with benzoyl hydrazine in ethanol. Eight rare earth complexes with H 2L were synthesized in methanol and characterized by elemental analysis, IR, 1H NMR, EI-MS and molar conductivity measurement. The results indicated the molecular formula of H 2L is C 16H 24N 2O 4 and the composition of rare earth complexes is REL 3·nH 2O(where n=1～2, RE=La, Sm, Eu, Gd, Tb, Dy, Yb and Y). The H 2L as a tridentate ligand coordinates with rare earth ion and forms nine-coordination complexes. The K-B method tests showed the title complexes only have a low bacteriostatic activity against staphylocus auteus, escherichia coil and bacillus subtilis.展开更多
文摘Four new acylhydrazones containing carboxyl,3a3d,were synthesized and their compositions and structures were characterized with elemental analysis, MS,IR and 1H NMR spectra.Their bacterio-（static） activities against staphylocus auteus,escherichia coil and bacillus subtilis were studied by Kirby-Bauer method.
文摘The 2-(carboxymethoxyl)benzaldehyde benzoyl hydrazone(H 2L) was prepared by condensation of O-formylphenoxy acetic acid with benzoyl hydrazine in ethanol. Eight rare earth complexes with H 2L were synthesized in methanol and characterized by elemental analysis, IR, 1H NMR, EI-MS and molar conductivity measurement. The results indicated the molecular formula of H 2L is C 16H 24N 2O 4 and the composition of rare earth complexes is REL 3·nH 2O(where n=1～2, RE=La, Sm, Eu, Gd, Tb, Dy, Yb and Y). The H 2L as a tridentate ligand coordinates with rare earth ion and forms nine-coordination complexes. The K-B method tests showed the title complexes only have a low bacteriostatic activity against staphylocus auteus, escherichia coil and bacillus subtilis.
