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).
AANL Foundation (Yerevan Physics Institute), 2-Alikhanyan Brothers St., Yerevan 0036, Armenia. Electronic address: vasak@mail.yerphi.am.
Vasak B
VB
Gavalyan
D001547:Benzaldehydes / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D066244:Proton Magnetic Resonance Spectroscopy; D012545:Schiff Bases / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014753:Vinyl Compounds / Q000138:chemical synthesis*; D014961:X-Ray Diffraction
D001547:Benzaldehydes; D012545:Schiff Bases; D014753:Vinyl Compounds; D048271:Chitosan
4-(2-Haloethyl)benzaldehyde; Chitin; Chitosan; New chitosan Schiff base