[4+2] Annulation of 3-(2,2-diethoxyethyl)-1,3-dicarbonyl compounds with indoles catalyzed by Brønsted acid ionic liquid for the synthesis of carbazoles
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DOI: 10.1016/j.tetlet.2018.10.029
Abstract: Abstract Various carbazoles were synthesized via [4+2] annulation of 3-(2,2-diethoxyethyl)-1,3-dicarbonyl compounds with indoles. A Bronsted acid ionic liquid, [BPy]HSO4, was proven to be effective catalyst for this reaction. The ionic liquid catalyst can be recycled… read more here.
Keywords: ionic liquid; liquid; compounds indoles; dicarbonyl compounds ... See more keywords