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Abstract Chromeno[4,3-b]chromene derivatives were synthesized from multicomponent reaction between 4-hydroxycoumarin, aryl aldehyde derivatives and 1,3-cyclohexanedione promoted by niobium pentachloride. This new method is simple, cost-effective, provides good yields with good… Click to show full abstract
Abstract Chromeno[4,3-b]chromene derivatives were synthesized from multicomponent reaction between 4-hydroxycoumarin, aryl aldehyde derivatives and 1,3-cyclohexanedione promoted by niobium pentachloride. This new method is simple, cost-effective, provides good yields with good substrate generality and can be conducted in short reaction times.
Keywords:
multicomponent reaction;
promoted niobium;
chromene derivatives;
reaction;
chromeno chromene;
niobium pentachloride
Journal Title: Tetrahedron Letters
Year Published: 2017
Link to full text (if available)
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Journal Title: Tetrahedron Letters
Year Published: 2017
Link to full text (if available)
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recommendations!