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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… Click to show full 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 three times without significant loss of its catalytic activity.
Keywords:
ionic liquid;
liquid;
compounds indoles;
dicarbonyl compounds;
diethoxyethyl dicarbonyl;
annulation diethoxyethyl
Journal Title: Tetrahedron Letters
Year Published: 2018
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Journal Title: Tetrahedron Letters
Year Published: 2018
Link to full text (if available)
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recommendations!