Bi(OTf)3-catalyzed solvent-free synthesis of pyrano[3,2-c]coumarins through a tandem addition/annulation reaction between chalcones and 4-hydroxycoumarins
| Autor: | Gohain, Mukut, van Tonder, Johannes H., Bezuidenhoudt, Barend C.B. |
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| Zdroj: | In Tetrahedron Letters 17 July 2013 54(29):3773-3776 |
| Databáze: | ScienceDirect |
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