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Study by thermal methods on some new cyclic ylides and derivatives

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Abstract

The study is devoted to the characterization by TG, DTG, DTA, both in air and N2 atmosphere, of three cyclic ylides as well as two spirane derivatives, to the purpose of elucidating the correlation between structure, thermostability and thermal degradation mechanism. Thermal analysis data indicated that the degradation mechanism is characteristic for every sample, and the consequences of structural peculiarities are discussed. The thermostability series of the samples is correlated to their structure. The quantitative TG-DTG-DTA analysis allowed some considerations on the thermal degradation mechanism, subsequently confirmed by mass spectrometry. The melting points obtained by DTA and Boetius measurements along with the initial degradation temperatures from TG-DTG-DTA curves indicates the temperature range for the use and storage of these compounds, considering that some derivatives of cyclic ylides show biological activity and potential medical applications.

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Authors and Affiliations

  1. Faculty of Chemistry, Al. I. Cuza’ University, 11 Carol I Bd, Iassy, Romania

    C. Moldoveanu, Lucia Odochian, I. Mangalagiu & M. Dumitraş

  2. Faculty of Chemical Engineering, Gh. Asachi’ University, 71A D. Mangeron Bd, Iassy, Romania

    N. Apostolescu

Authors
  1. C. Moldoveanu
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  2. Lucia Odochian
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  3. I. Mangalagiu
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  4. M. Dumitraş
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  5. N. Apostolescu
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Corresponding author

Correspondence to M. Dumitraş.

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Moldoveanu, C., Odochian, L., Mangalagiu, I. et al. Study by thermal methods on some new cyclic ylides and derivatives. J Therm Anal Calorim 93, 907–914 (2008). https://doi.org/10.1007/s10973-007-8918-6

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  • DOI: https://doi.org/10.1007/s10973-007-8918-6

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