Facile synthesis of 4H-chromene derivatives via base-mediated annulation of ortho-hydroxychalcones and 2-bromoallyl sulfones

Autor: Srinivas Thadkapally, Athira C. Kunjachan, Rajeev S. Menon
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 16-21 (2016)
Druh dokumentu: article
ISSN: 1860-5397
DOI: 10.3762/bjoc.12.3
Popis: 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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