TITLE:
Branched Polyamines Functionalized with Proposed Reaction Pathways Based on 1H-NMR, Atomic Absorption and IR Spectroscopies
AUTHORS:
Vicente Cervantes-Mejía, Elizabeth Baca-Solis, Judith Caballero-Jiménez, Rosario Merino-García, Jesús Cruz-Gatica, Gabriela Moreno-Martínez, Yasmi Reyes-Ortega
KEYWORDS:
Branched Polyamines, Functionalization Reactions, IR, NMR, Atomic Absorption Spectroscopy
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.5 No.16,
November
25,
2014
ABSTRACT: Three novel branched polyamines N,N,N’,N’-tetrakis-[3((pyridine-2-methyl)-amine) propyl]-1,4- butanediamine (1), N,N,N’,N’-tetrakis-[N-((2-methylpyridine)ethyl)propanamide]ethylenediamine (2) and N,N,N’,N’-tetrakis-[3((2-hidroxibenziliden)-amine)propyl]-1,4-butanediamine (3), were synthesized starting from 2-pyridinecarboxaldeyde with DAB-Am-4 for 1, PAMAM G0 for 2 and from salicylaldehyde with DAB-Am-4 for 3. The pathway reactions have been proposed by 1H-NMR, IR and Atomic Absorption Spectroscopy. The optimal reaction time was set by IR spectroscopy following aldehyde peak modification. 1 and 2 were obtained as both hydrochlorides and as free amines and 3 only as free imine. These polyamines were characterized by UV-Vis, IR, 1H-NMR and 13C-NMR and Mass Spectrometry.