Thermodynamic Properties of 2-Cyano-3-[5-(Phenyl)-2-Furyl]-2-Propenamide and 2-Cyano-3-[5-(4-Methylphenyl)-2-Furyl]-2-Propenamide Solutions in Organic Solvents

Abstract

1 The fusion temperature of 2-cyano-3-[5-(phenyl)-2-furyl]-2-propenamide and 2-cyano-3-[5-(4-methylphenyl)-2-furyl]-2-propenamide and their temperature dependence of dissolution in acetonitrile, benzene, dimethylketone, ethyl acetate and 2-propanol have been determined. According to the temperature dependence the differential enthalpies and entropies of the solution were calculated. Taking into account the entropies of fusion the entropies and enthalpies of mixing were calculated at 298 K. The effect of intermolecular interaction in the investigated solutions on their solubility and enthalpies of mixing has been analyzed.

Thermodynamic Properties of 2-Methyl-5-arylfuran-3 Carboxylic Acids Chlorine Derivatives in Organic Solvents

“…Since most reactions occur in solutions, the optimization of synthesis and purification of compounds with an arylfuran fragment is impossible without the determination of thermodynamic parameters of solubility. Some works regarding the thermodynamic properties of compounds with arylfuran fragment have appeared in recent years [12][13][14][15][16][17]. The presented work is the continuation of the previous research.…”

“…Δ fus H = T fus • Δ fus S (4) To evaluate the specific entropy of fusion of the investigated acids, we used the experimental results [13][14][15][16][17][18][19][20] obtained by a derivatographic method for arylfurans (Table 4).…”

“…The temperature dependence of the solubility of the investigated acids was determined by gravimetric method, the same as in previous studies [12][13][14][15][16][17].…”