Abstract
The Pd-catalyzed three-component reaction of enol ethers, methyl orthoformate, and salicylaldehyde is described. Both steroid and non-steroid enol ethers are compatible. This reaction allows the construction of tetrahydro-2H,5H-pyrano[2,3-b]chromene. Unambiguous NMR characterization and X-ray diffraction structures are provided.
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Cordova-Rodríguez, M. D., Olivares-Castillo, J. A., Flores-Álamo, M., García-Santos, W. H., & Iglesias-Arteaga, M. A. (2025). Palladium-Catalyzed Three-Component Reaction of Enol Ethers, Salicylaldehyde, and Trimethyl Orthoformate: A Fast Synthesis of Tetrahydro-2H,5H-Pyrano[2,3-b]Chromenes. Journal of Heterocyclic Chemistry, 62(5–6), 378–382. https://doi.org/10.1002/jhet.4949
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