Synthesis and Characterization of Some New 2-Amino-3-Hydroxypyridine Schiff Base Compounds and Their Interactions with Group 13 Metal Ions

Abstract

trifluoro-2,4-pentadione) with the general formula [Y][ML 2 ] (M = Al 3+ , Ga 3+ , In 3+ and Y = K + ) were synthesized and characterized by 1 HNMR, FT-IR and UV-vis spectrophotometry. The formation constants of the complexes were determined spectrophotometrically at 25 • C in methanol. The trend of formation constants of the complexes are as follows:Al 3+ < Ga 3+ < In 3+ < Tl 3+ H 2 L 1 > H 2 L 2 > H 2 L 3

Effect of Bronsted Acids and Bases, and Lewis Acid (Sn2+) on the Regiochemistry of the Reaction of Amines with Trifluoromethyl-β-diketones: Reaction of 3-Aminopyrrole to Selectively Produce Regioisomeric 1H-Pyrrolo[3,2-b]pyridines

“…Reactions of amines − with fluoro-substituted 1,3-diketones to give enamines, imines, − heterocycles − and ligands − have been studied. Much of this work has been driven by the effect of fluorine atoms on the steric, electronic, and lipophilic properties of biologically active molecules .…”