Journal
MOLECULES
Volume 10, Issue 7, Pages 762-766Publisher
MDPI
DOI: 10.3390/10070762
Keywords
Pechmann reaction; 4-methylcoumarins; boron trifluoride dihydrate
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The Pechmann reaction of substituted phenols 1a-e with methyl acetoacetate (2) can be activated by boron trifluoride dihydrate (3) to give the corresponding 4-methyl-coumarin derivatives 4a-e in excellent yield (98-99 %).
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