Recyclization of indolo[2,3-c]pyrylium salts by reaction with secondary amines |
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| Authors: | V I Dulenko A V Kibal'nyi Yu A Nikolyukin V I Luk'yanenko A V Goncharov S A Sidorova D S Yufit Yu T Struchkov |
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| Institution: | (1) Institute of Physical Organic and Coal Chemistry, Academy of Sciences of the Ukrainian SSR, 340114 Donetsk;(2) P. I. Lebedev-Polyanskii Vladimir State Pedagogical Institute, 600024 Vladimir |
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| Abstract: | 1-R-3-methylindolo2,3-c]pyrylium salts react with cyclic secondary amines (morpholine, piperidine, and N-methylpiperazine) to give, depending on the structure of the alkyl substituent R, either 1- (when R=Me) or 3-aminocarbazoles (when R=i-Pr), or mixtures of both (when R=Et). The position of the amino-substituent in 1-morpholino-3,9-dimethylcarbazole has been established by x-ray diffraction examination.Deceased.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 546–551, April, 1990. |
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