Synthesis and characterization of new chitosan-based Schiff base compounds.
Chitin (Cn) was extracted from the armors of crustaceans Astacus leptodactylus (Lake Sevan, Armenia) and then converted to chitosan (Cs), its deacetylated derivative. Novel Schiff bases (CsSB) were synthesized by interaction of Cs with 4-(2-chloroethyl)benzaldehyde (aldehyde-1) and 4-(2-bromoethyl)benzaldehyde (aldehyde-2), and underwent dehydrohalogenation, under basic conditions (10°C), to yield respective vinyl derivatives. All newly synthesized compounds were structurally characterized by solubility tests, elemental analysis, infrared spectroscopy (FTIR), thermogravimetry (TGA), proton nuclear magnetic resonance ((1)H NMR), and X-ray diffraction (XRD).
['Gavalyan|Vasak B|VB|']
D001547:Benzaldehydes D048271:Chitosan D066244:Proton Magnetic Resonance Spectroscopy D012545:Schiff Bases D017550:Spectroscopy, Fourier Transform Infrared D013818:Thermogravimetry D014753:Vinyl Compounds D014961:X-Ray Diffraction
Chitin Chitosan 4-(2-Haloethyl)benzaldehyde New chitosan Schiff base