Some new tetrahydropyrimidine derivatives have been synthesized and their structural determination was done by IR, NMR and mass spectral data. Thermal analysis of these synthesized dihydropyrimidinthiones has been carried out by TGA and DSC techniques. From the thermograms, various kinetic parameters such as order of degradation (n), energy of activation (E), frequency factor (A) and entropy change (ΔS) have been evaluated. Further, thermal stability of tetrahydropyrimidine have been determined which is found to depend on the type of substituent present in the compounds.
International Letters of Chemistry, Physics and Astronomy (Volume 18)
K. Bhesaniya et al., "Determination of Kinetic Parameters of Decomposition of Tetrahydropyrimidine Derivatives", International Letters of Chemistry, Physics and Astronomy, Vol. 18, pp. 23-32, 2013