Synthesis and structure of 4-hydroxy-3-pyridylcoumarins
摘要:
The reaction of substituted 3-cinnamoyl-4-hydroxycoumarins with pyridinium salts of various bromomethyl ketones gives the corresponding 4-hydroxy-3-pyridylcoumarins. The use of microwave radiation decreases the time required and improves the yield of this reaction. The products obtained do not display solvatochromic properties or photochemical activity.