2011
DOI: 10.1134/s1070428011080094
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Reactions of N-arylsulfonylquinone imines with enamines

Abstract: Depending on the reaction conditions N-arylsulfonyl-1,4-quinone imines with enamines led to the formation of the products of 1,4-addition, derivatives of benzo-and naphthofuran, indole, and benzindole.A multitude of publications describe the reactions of p-benzoquinone with enamines resulting in heterocyclic compounds: benzofuran (I) [1][2][3][4] or indole (II) [2, 3, 5-9] derivatives which are mostly biologically active substances [4,10,11]. The structure of the reaction products depends on the structure of i… Show more

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Cited by 6 publications
(5 citation statements)
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“…The stereochemistry of 3m was unambiguously determined by X-ray crystallographic analysis (see Supporting Information, SI). In this study, it became obvious that 2-substituted quinone imine ketals have a completely different reactivity from 3-substituted ones, giving indolines as a major product. …”
mentioning
confidence: 98%
“…The stereochemistry of 3m was unambiguously determined by X-ray crystallographic analysis (see Supporting Information, SI). In this study, it became obvious that 2-substituted quinone imine ketals have a completely different reactivity from 3-substituted ones, giving indolines as a major product. …”
mentioning
confidence: 98%
“…Ранее было установлено, что в апротонных растворителях (дихлорэтан, хлороформ) в результате реакции Неницеску можно получить производные индола [5][6][7]. Все наши попытки в данной работе получить их на основе N-ацил-1,4-бензохинонмоноиминов (Ia-h) оказались неудачными -получались много компонентные смеси, разделить которые не удалось.…”
Section: схемаunclassified
“…Таблица 2 Для спектров ЯМР 1 Н продуктов (IIIa-h) характерно наличие синглета протонов метильной группы в положении 2 бензофуранового фрагмента в области δ 2,74-2,80 м.д., синглета протона Н 4 при δ 7,73-7,99 м.д., синглета протонов группы МеСО при δ 2,56-2,58 м.д., что полностью согласуется со спектральными характеристиками производных бензофурана, полученных ранее на основе N-арил(алкил) сульфонил-1,4-бензохинонмоноиминов [7].…”
Section: схемаunclassified
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