86439-49-8Relevant articles and documents
Pyrrolo[1',2':1,2]pyrazino[6,5-b]carbazoles
Lancelot,Gazengel,Rault,Robba
, p. 45 - 51 (1983)
The synthesis of the new heterocycles pyrrolo[1',2':1,2]pyrazino[6,5-b]carbazoles was achieved by the intramolecular cyclisation of 2-(1-pyrrolyl)carbazole derivatives. These latter compounds were obtained by the Clauson-Kaas reaction starting from the corresponding 2-aminocarbazoles, obtained by reduction of 2-nitrocarbazoles. A study of this reduction has shown that the introduction of acetyl grouping in position 9 makes this reaction easier and gives better results than previous methods. 1H-NMR spectra are studied.