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Facile synthesis of 4H-chromene derivatives via base-mediated annulation of ortho-hydroxychalcones and 2-bromoallyl sulfones
The cesium carbonate-mediated reaction of 2-bromoallyl sulfones and ortho-hydroxychalcones furnished 3-arylsulfonyl-4H-chromene derivatives in 58–67% yield (18 examples). 2-Bromoallyl sulfones functioned as synthetic surrogates for allenyl sulfones in the reaction.
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Publicado no: | Beilstein J Org Chem |
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Main Authors: | , , |
Formato: | Artigo |
Idioma: | Inglês |
Publicado em: |
Beilstein-Institut
2016
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Assuntos: | |
Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4734429/ https://ncbi.nlm.nih.gov/pubmed/26877804 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.3762/bjoc.12.3 |
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