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Paper | Special issue | Vol 37, No. 3, 1994, pp.1695-1700
Published online, 1st January, 1970
DOI: 10.3987/COM-93-S138
Substitued Vinyl Azides in Synthesis of Furo[3,2-b:4,5-b']diplyrroles and Pyrrolo[2',3':4,5]furo[3,2-c]pyridines

Alzbeta Krutosiková* and Miloslava Dandárová

*Department of Organic Chemistry, Faculty of Chemical Technology, Slovak Technical University, SK-81237 Bratislava, Slovakia

Abstract

A number of pyrrolo[2’,3’:4,5]furo[3,2-c]pyridines (5a-5d) were prepared by the reaction of corresponding iminophosphoranes (4a, 4b), available from substituted vinylazides (1a, 1b) and triphenylphosphine, with phenyl or 3-chlorophenyl isocyanates. The appropriate vinylazides (1a, 1b) were used for the preparation of substituted furo[3,2-b:4,5-b]dipyrroles (2a, 2b). Compounds (3a, 3b) were prepared in phase transfer catalysis condlions.