SCHEDULED MAINTENANCE
Syntheses of substituted 7-hydroxycoumarins via reactions of 1,3-dihydroxybenzene with ethyl acetoacetate (Pechmann reaction) and with propenoic acid and propynoic acids are reported, in which the production of environmentally harmful waste streams is minimized by the use of solid acid catalysts.
A. J. Hoefnagel, E. A. Gunnewegh, R. S. Downing and H. van Bekkum, J. Chem. Soc., Chem. Commun., 1995, 225 DOI: 10.1039/C39950000225
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