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Synthesis of some New Quinoxalines Bearing Pyridinyl Thiazole Moiety

Kathrotiya H. G., Naliapara Y. T.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 52

74--83

Keeping the objective to build up a new structural class of quinoxaline, a new series of quinoxaline derivatives bearing the pyridinyl thiazole nucleus have been synthesized by base-catalyzed chloro-amine condensation reaction approach. The protocol offers expeditious and easy synthesis with excellent yield. The chemical structures of the synthesized compounds were elucidated by 1H NMR, 13C NMR, FT-IR, elemental analysis, and mass spectral data.

Synthesis and Characterization of a New Thiazole Schiff Base 5-Bromo-2-hydroxybenzylidene-2-aminobenzothiazole and Its Complexes with Co(II), Cu(II) and NiSaII)

Saydam S., Alkan C.

Polish Journal of Chemistry

2001

Vol. 75, nr 1

29-33

A new ligand 5-bromo-2-hydroxybenzylidene-2-aminobenzothiazole has been synthesized from 2-aminobenzothiazole and 5-bromosalicylaldehyde by condensation in ethanol. Metal complexes of the ligand were prepared from chloride salts of Co(II), Cu(II), and Ni(II) in ethanol. Characterization of the ligand and its complexes were carried out by microanalyses, magnetic susceptibility measurements, FT-IR, 13C, 1H NMR, and UV-Visible spectroscopy. It was suggested that two ligands with two water molecules coordinate to each metal atom by hydroxy oxygen and imino nitrogen to form high spin distorted octahedral complexes with Co(II), Ni(II) and Cu(II).