Poly(4-vinylpyridine)-supported sulfuric acid is an efficient catalyst for the Pechmann condensation of acetoacetic esters with phenols, leading to the formation of coumarins in good yields within a few minutes under solvent-free microwave conditions. The catalyst used can be recovered and reused after activation. © Springer-Verlag 2011.
CITATION STYLE
Borah, K. J., & Borah, R. (2011). Poly(4-vinylpyridine)-supported sulfuric acid: An efficient solid acid catalyst for the synthesis of coumarin derivatives under solvent-free conditions. Monatshefte Fur Chemie, 142(12), 1253–1257. https://doi.org/10.1007/s00706-011-0559-6
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