59800-96-3Relevant academic research and scientific papers
A new route to ring-fused pyrazines: Imidazo[4,5-b]quinoxalines by a simple oxidation-annulation sequence
Herzoge, Svenja,Buehrdel, Gunther,Beckert, Rainer,Klimas, Susann,Wuerthwein, Ernst-Ulrich,Grimme, Stefan,Goerls, Helmar
experimental part, p. 4049 - 4057 (2010/03/24)
Novel tricyclic 4H-imidazo[4,5-b]quinoxalines were synthesized by a new orfto-annulation process starting from 4Himidazoles and cerammonium nitrate (CAN) as oxidation reagent in the presence of potassium carbonate as base. This reaction is interpreted as
5-ring-cycloamidines - Deeply coloured heterocycles with unusual properties. I synthesis and spectral features
Atzrodt, Jens,Brandenburg, Joerg,Kaepplinger, Christian,Beckert, Rainer,Guenther, Wolfgang,Goerls, Helmar,Fabian, Juergen
, p. 729 - 734 (2007/10/03)
The cycloacylation reaction of benzamidines with bis-imidoylchlorides 1 derived from oxalic acid was investigated. For example, treatment of benzamidine with 1 gives the new 4H-imidazoles (3a-1) in yields up to 92%. Because of rapid H-transfer processes i
