Summary
A number of furo[3,2-c]pyridines (4a–4d) and benzo[b]derivative (4e), as well as pyrrolo[2′,3′-4,5]furo[3,2-c]pyridine (8) were prepared by reaction of the corresponding iminophosphoranes, available from ethyl azidoheteroacrylates and triphenylphosphine, with phenyl isocyanate. The appropriate azidoheteroacrylates were used for the preparation of some substituted furo[3,2-b:4,5-b]dipyrroles (6). The reactions of the prepared compounds are described.
Zusammenfassung
Eine Anzahl von Furo[3,2-c]pyridinen (4a –4d), ein Benzo[b]derivat (4e) und Pyrrolo[2′,3′:4,5]furo[3,2-c]pyridin (8) wurden durch die Reaktion von Phenylisocyanaten mit den entsprechenden Iminophosphoranen dargestellt, die aus Ethyl-azidoheteroacrylaten und Triphenylphosphin leicht zugänglich sind. Die entsprechenden Azidoacrylate wurden zur Synthese einiger Furo[3,2-b:4,5-b′]dipyrrole (6) verwendet. Die Reaktionen einiger dieser Verbindungen werden beschrieben.
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Krutosikova, A., Dandarova, M., Chylova, J. et al. Condensed O-, N-heterocycles by the transformation of azidoacrylates. Monatsh Chem 123, 807–815 (1992). https://doi.org/10.1007/BF00812330
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DOI: https://doi.org/10.1007/BF00812330