38016-39-6Relevant academic research and scientific papers
Synthesis, solvatochromaticity and bioactivities of some transition metal complexes with 2-(R-benzylideneamino)-pyridin-3-ol Schiff base derivatives
Ahmed,Kassem
, p. 359 - 366 (2010)
New four Schiff bases are prepared by condensation of 2-amino-pyridin-3-ol with 3, 4-dihydroxy-benzaldehyde (I), 2-hydroxybenzaldehyde (II), 5-bromo-2-hydroxybenzaldehyde (III), and 4-dimethylaminobenzaldehyde (IV). The structures of these compounds are characterized based on elemental analyses (C. H. N), IR and 1H NMR. Also, the electronic absorption spectra are recorded in organic solvents of different polarity. The solvents are selected to be covered a wide range of parameters (refractive index, dielectric constant and hydrogen bonding capacity). The UV-vis absorption spectra of Schiff base compounds are investigated in aqueous buffer solutions of varying pH and utilized for the determination of ionization constant, pKa and activation free energy, ΔG* of the ionization process. The biological activity against bacterial species and fungi as microorganisms representing different microbial categories such as (two Gram-negative bacteria, Eschericha coli and Agrobacterium sp.),three Gram-positive bacteria (Staphylococcus aureus, Bacillus subtlus and Bacillus megatherium), yeast (Candida albicans), and fungi (Aspergillus niger) were studied.
Desmotropy, polymorphism, and solid-state proton transfer: Four solid forms of an aromatic o-hydroxy schiff base
Rubcic, Mirta,Uzarevic, Krunoslav,Halasz, Ivan,Bregovic, Nikola,Malis, Momir,Dilovic, Ivica,Kokan, Zoran,Stein, Robin S.,Dinnebier, Robert E.,Tomisic, Vladislav
experimental part, p. 5620 - 5631 (2012/06/17)
The Schiff base derived from salicylaldehyde and 2-amino-3-hydroxypyridine affords a diversity of solid forms, two polymorphic pairs of the enol-imino (D1a and D1b) and keto-amino (D2a and D2b) desmotropes. The isolated phases, identified by IR spectrosco
H NMR, IR and UV/VIS spectroscopic studies of some Schiff bases derived from 2-aminobenzothiazole and 2-amino-3-hydroxypyridine
Issa, Raafat M.,Khedr, Abdalla M.,Rizk, Helen
body text, p. 875 - 884 (2009/12/04)
By condensing 2-aminobenzothiazole with 2-hydroxy-1-naphthaldehyde, 2-hydroxybenzaldehyde, 4-methoxybenzaldehyde, 4-hydroxybenzal-dehyde, benzaldehyde and 4-dimethylaminobenzaldehyde, and five Schiff bases Ia-Ie are prepared. Also, two Schiff bases IIa an
