Synthesis of 4H-chromenes promoted by NbCl<inf>5</inf> through multicomponent reaction
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Data
2015-06-25
Autores
Oshiro, Paula Beatriz [UNESP]
Da Silva Gomes Lima, Paula Souza [UNESP]
De Menezes, Manoel Lima [UNESP]
Da Silva-Filho, Luiz Carlos [UNESP]
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Resumo
Abstract Multicomponent reactions between phenols, β-ketoesters, and benzaldehydes for the synthesis of 4H-chromenes derivatives promoted by niobium pentachloride (NbCl<inf>5</inf>) were carried out, providing good yields and reasonable reaction times under mild reaction conditions.
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Chromene derivatives, Lewis acid, Multicomponent reaction, Niobium pentachloride
Como citar
Tetrahedron Letters, v. 56, n. 30, p. 4476-4479, 2015.