2009
DOI: 10.1134/s1070428009020249
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Synthesis, properties, and interaction with paraquat of new fluorenonocrownophanes containing a hydroquinone fragment

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Cited by 6 publications
(5 citation statements)
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“…It is important to note that the magnitudes of the shifts of H α and H β paraquat protons observed in case of complexes with naphthalene-containing fluorenocrownophanes 2e-g are the largest among all crownophanes studied by us. [17,19,[21][22][23][24] An interesting fact is that the shift of H 9 protons is almost zero for [2e@6] 2+ complex. It can be caused by two reasons: the structure of this complex has significant differences from the complexes of larger crownophanes, or the shielding effect of paraquat-dication is comparable to one of a naphthalene fragment shielding H 9 protons in a non-complexed crownophane.…”
Section: +mentioning
confidence: 99%
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“…It is important to note that the magnitudes of the shifts of H α and H β paraquat protons observed in case of complexes with naphthalene-containing fluorenocrownophanes 2e-g are the largest among all crownophanes studied by us. [17,19,[21][22][23][24] An interesting fact is that the shift of H 9 protons is almost zero for [2e@6] 2+ complex. It can be caused by two reasons: the structure of this complex has significant differences from the complexes of larger crownophanes, or the shielding effect of paraquat-dication is comparable to one of a naphthalene fragment shielding H 9 protons in a non-complexed crownophane.…”
Section: +mentioning
confidence: 99%
“…bis(hexafluorophosphate) 6•2PF 6 , which is one of the most studied electron-deficient guests in macrocyclic chemistry. [17][18][19][21][22][23][24] This methodology was used for the studies of the crownophanes 2a-g as well.…”
mentioning
confidence: 99%
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“…Альтернативные способы получения малоприемлемы из-за легкого окисления производных флуорена при синтезе флуоренокраунофанов на их основе. В связи с этим синтез соединений 2а-г осущест-вляли восстановлением соответствующих флуореноно-краунофанов 1а-г [25,26] водородом в присутствии 10% палладия на угле (Схема 1). Контроль степени превра-щения исходных соединений осуществляли методом ТСХ на стеклянных пластинах с закрепленным слоем нейтрального оксида алюминия.…”
Section: результаты и обсуждениеunclassified
“…[7] Присутствие больших ароматических блоков и поляр-ных групп увеличивает устойчивость их комплексов с электронодефицитными органическими субстратами. [8][9][10][11][12][13] Введение гидроксильных групп в молекулу краунофана или криптанда открывает широкие возможности для дальнейших структурных модификаций этих соедине-ний, иммобилизации их на нерастворимые носители и создания полимерных материалов.…”
Section: Introductionunclassified