期刊
SYNLETT
卷 -, 期 11, 页码 1909-1912出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2004-830858
关键词
sulphamic acid; Pechmann reaction; coumarins
Sulphamic acid (H2NSO3H, SA) is used as an alternative to conventional acid catalysts in the Pechmann condensation of phenols with beta-ketoester leading to the formation of substituted coumarin. The method is simple, cost-effective, solvent-free and gives good yields in a short reaction time.
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