Synthesis of some new anils: part 1. Reaction of 2-hydroxy-benzaldehyde and 2-hydroxynaphthaldehyde with 2-aminopyridene and 2-aminopyrazine.
New Schiff bases derived from 2-aminopyridene and 2-aminopyrazine have been synthesized. The UV-Visible spectra of the compounds have been investigated in acetonitrile and toluene. The compounds were in tautomeric equilibrium (enol-imine O- H...N, keto-amine O...H-N forms) in polar and nonpolar solvents. For some derivatives the keto-amine form was observed in both toluene and acetonitrile. 1H-NMR and IR results showed that all Schiff bases studied favor the enol-imine form over the keto form in a weakly polar solvent such as deuterochloroform.
Asiri
Abdullah M
AM
Chemistry Department, Faculty of Science, King Abdul Aziz University, Jeddah 21413, P. O. Box 80203, Saudi Arabia. aasiri2@kaau.edu.sa
Badahdah
Khadija O
KO
D000097:Acetonitriles / Q000737:chemistry; D000447:Aldehydes / Q000737:chemistry; D000631:Aminopyridines / Q000737:chemistry; D000814:Aniline Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D009281:Naphthalenes / Q000737:chemistry; D011719:Pyrazines / Q000737:chemistry; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry; D012997:Solvents; D013055:Spectrophotometry, Infrared; D013237:Stereoisomerism; D014050:Toluene / Q000737:chemistry
C482304:2-hydroxynaphthaldehyde; D000097:Acetonitriles; D000447:Aldehydes; D000631:Aminopyridines; D000814:Aniline Compounds; D009281:Naphthalenes; D011719:Pyrazines; D012545:Schiff Bases; D012997:Solvents; C013243:salicylaldehyde; D014050:Toluene; C079424:2-aminopyrazine; C032439:alpha-aminopyridine; C032159:acetonitrile