Thermal stability of N-heterocycle-stabilized iodanes – a systematic investigation

Thermal stability of N-heterocycle-stabilized iodanes – a systematic investigation

Bibliographic Details
Parent link:Beilstein Journal of Organic Chemistry
Vol. 15.— 2019.— [P. 2311-2318]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий (ИШХБМТ)
Other Authors: Boelke A. Andreas, Vlasenko Yu. A. Yuliya Aleksandrovna, Yusubov M. S. Mekhman Suleiman-Ogly (Suleimanovich), Nachtsheim B. J. Boris, Postnikov P. S. Pavel Sergeevich
Summary:Title screen
The thermal stability of pseudocyclic and cyclic N-heterocycle-stabilized (hydroxy)aryl- and mesityl(aryl)-λ3-iodanes (NHIs) through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) is investigated. Peak decomposition temperatures (Tpeak) were observed within a wide range between 120 and 270 °C. Decomposition enthalpies (ΔHdec) varied from −29.81 to 141.13 kJ/mol. A direct comparison between pseudocyclic and cyclic NHIs revealed high Tpeak but also higher ΔHdec values for the latter ones. NHIs bearing N-heterocycles with a high N/C-ratio such as triazoles show among the lowest Tpeak and the highest ΔHdec values. A comparison of NHIs with known (pseudo)cyclic benziodoxolones is made and we further correlated their thermal stability with reactivity in a model oxygenation.
Language:English
Published: 2019
Subjects:
электронный ресурс
труды учёных ТПУ
differential scanning calorimetry
hypervalent iodine
N-heterocycle
stability
thermogravimetry
дифференциальная сканирующая калориметрия
гипервалентный йод
гетероциклы
стабильность
термогравиметрия
Online Access:https://doi.org/10.3762/bjoc.15.223
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660739

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