2006
DOI: 10.3390/11010072
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Reactions of 9-Alkyl-3-aminocarbazoles with Ethyl-3-oxo-butanoate and Identification of the Products Obtained

Abstract: Abstract:The reactions in benzene of 9-alkyl-3-aminocarbazoles with ethyl-3-oxobutanoate yielded ethyl-3-[(9-alkyl-9H-carbazol-3-yl)amino]but-2-enoate condensation products or N-(9-ethyl-9H-carbazol-3-yl)-3-oxobutanamide acylation products. The condensation products were cyclized to the corresponding 4,7-dihydro-pyrido[2,3-c]-carbazol-1-ones upon heating in mineral oil at 240-250 °C. The structures of the synthesized compounds were investigated by IR, mass spectrometry, 1 H-and 13 C-NMR spectroscopy and MM2 mo… Show more

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“…in mineral oil at 240-250°C, compound 124 could easily be cyclized to 7-ethyl-3-methyl-4,7-dihydro-pyrido[2,3c]-carbazol-1-one (126) (Scheme 44). 62…”
Section: Formation Of Azepino[32-b]carbazolesmentioning
confidence: 99%
“…in mineral oil at 240-250°C, compound 124 could easily be cyclized to 7-ethyl-3-methyl-4,7-dihydro-pyrido[2,3c]-carbazol-1-one (126) (Scheme 44). 62…”
Section: Formation Of Azepino[32-b]carbazolesmentioning
confidence: 99%