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Pyrano[3,4-c]pyrandiium dication

Konstantin Filippovich Suzdalev 1
Konstantin Filippovich Suzdalev
, 
Alina Victorovna Krachkovskaya 1
Alina Victorovna Krachkovskaya
, 
Valery Vladimirovich Tkachev 2
Valery Vladimirovich Tkachev
, 
Sergey Vasilievich Kurbatov 1
Sergey Vasilievich Kurbatov
, 
10.1016/j.mencom.2020.05.022
Published 2020-04-30
Communication , Volume 30, Issue 3, 325-327
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Suzdalev K. F. et al. Pyrano[3,4-c]pyrandiium dication // Mendeleev Communications. 2020. Vol. 30. No. 3. pp. 325-327.
GOST all authors (up to 50) Copy
Suzdalev K. F., Krachkovskaya A. V., Tkachev V. V., Kurbatov S. V., Aldoshin S. M. Pyrano[3,4-c]pyrandiium dication // Mendeleev Communications. 2020. Vol. 30. No. 3. pp. 325-327.
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TY - JOUR
DO - 10.1016/j.mencom.2020.05.022
UR - https://mendcomm.colab.ws/publications/10.1016/j.mencom.2020.05.022
TI - Pyrano[3,4-c]pyrandiium dication
T2 - Mendeleev Communications
AU - Suzdalev, Konstantin Filippovich
AU - Krachkovskaya, Alina Victorovna
AU - Tkachev, Valery Vladimirovich
AU - Kurbatov, Sergey Vasilievich
AU - Aldoshin, Sergei Mikhailovich
PY - 2020
DA - 2020/04/30
PB - Mendeleev Communications
SP - 325-327
IS - 3
VL - 30
ER -
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@article{2020_Suzdalev,
author = {Konstantin Filippovich Suzdalev and Alina Victorovna Krachkovskaya and Valery Vladimirovich Tkachev and Sergey Vasilievich Kurbatov and Sergei Mikhailovich Aldoshin},
title = {Pyrano[3,4-c]pyrandiium dication},
journal = {Mendeleev Communications},
year = {2020},
volume = {30},
publisher = {Mendeleev Communications},
month = {Apr},
url = {https://mendcomm.colab.ws/publications/10.1016/j.mencom.2020.05.022},
number = {3},
pages = {325--327},
doi = {10.1016/j.mencom.2020.05.022}
}
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Suzdalev, Konstantin Filippovich, et al. “Pyrano[3,4-c]pyrandiium dication.” Mendeleev Communications, vol. 30, no. 3, Apr. 2020, pp. 325-327. https://mendcomm.colab.ws/publications/10.1016/j.mencom.2020.05.022.

Keywords

carbocation chemistry
dication
pyrano[3,4-c]pyrandiium
pyrylium salts

Abstract

Pyrano[3,4-c]pyrandiium dication has been detected in anhydrous D2SO4 using two-dimensional correlation NMR spectroscopy. The dication is generated as an intermediate in acid-catalyzed hydrolysis of 1-ethoxy-5-methyl-3,8-diphenyl-1H-pyrano[3,4-c]pyran-7-ium perchlorate, where the action of 70% HClO4 leads to the replacement of ethoxy group by hydroxyl one, and the reaction with SbCl5 affords dimeric bis(hexachloroantimonate) bearing two pyrano[3,4-c]pyran7-ium moieties linked via oxygen atom. The crystal structures of both isolated products have been determined.

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