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Solvent-free Mechanosynthesis of Two Thermochromic Schiff Bases

Branko Kaitner, Marija Zbačnik
2012 Acta Chimica Slovenica  
Two thermochromic Schiff bases mostly in keto-amine tautomeric form were obtained by means of mechanochemical synthesis. Both Schiff bases Compound 1 and Compound 2, respectively are derived from the same primary amine 2-amino-5-methylphenol. Salicylaldehyde was used as aldehyde component in preparation of 1, and o-vanillin as substituted salicylaldehyde component in synthesis of 2. Powder products of the neat grinding and liquid-assisted grinding syntheses of 1 and 2 were compared with the
more » ... mpared with the crystalline products, obtained by recrystallization from a small amount of solvent. Both raw powder and recrystallized products were characterized and compared by means of PXRD, DSC and IR.
pmid:24061325 fatcat:sg4b2de3nndl3ca6rkimn4yepm