Synthesis of Methylene Bridged Bis-pyrrolo[3,2-c]carbazoles via an Unusual Vilsmeier-Haack Product of N-Ethylcarbazole
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Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The unexpected result for the formylation of N-ethylcarbazole under the Vilsmeier-Haack conditions (POCl3/DMF) led to the synthesis of novel methylene bridged bis-pyrrolo[3,2-c]carbazoles via Hemetsberger indole synthesis was reported. A plausible mechanism for the formation of unexpectedly synthesized 7,7 '-methylene bis(9-ethyl-9H-carbazole-3-carbaldehyde) 4 was postulated. The full characterization data of dicarbazolylmethane 4 and the bis-pyrrolo carbazoles 10a-b were obtained by utilizing H-1 NMR, C-13 NMR, FT-IR, mass spectrometry and single crystal X-ray diffraction techniques.
Açıklama
Anahtar Kelimeler
Hemetsberger indolization, methylene bridged bis-carbazole, Vilsmeier-Haack formylation, Carbazole Alkaloids, Thermolysis, Enazides
Kaynak
Polycyclic Aromatic Compounds
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
40
Sayı
2