Thermoanalytical study of cyclization reaction of some thioureates |
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| Authors: | Gondová T. Koščaková D. |
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| Affiliation: | (1) Department of Physical and Analytical Chemistry, Faculty of Sciences, P. J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic E-mail |
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| Abstract: | Thermal initiated conversion of N-aryl-N'-(2-benzylpyridinium)thioureates into 2-arylamino-4H-benzo[d][1,3]thiazines was studied by non-isothermal differential scanning calorimetry (DSC), thermogravimetry (TG) and differential thermal analysis (DTA) in the solid-state. The values of molar reaction ethalpies (DH r) of six derivatives of thioureates and the melting parameters (T f, DH f, DS f) of the obtained products - benzothiazines were determined by the DSC method. This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | thioureate DSC enthalpy of fusion entropy of fusion phase transition benzothiazine enthalpy of reaction temperature of melting thermal analysis cyclization reaction |
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