Synthesis of some 3-phenyl chromenone-crown ethers and equilibrium studies on complexation with ion-pair extraction of sodium and potassium dyes

  • Metin Özerb, Mehmet A. I. çenb, Halil I.. Uğraşa, Mustafa Bulutb
  • Published 2003


6,7-Dihydroxy-3-phenyl-2H-chromenones and 7,8-dihydroxy-3-(methoxyphenyl)-2H-chromenones, o-dihydroxy-3phenylcoumarins, were prepared from phenylacetic acid/2,4,5-trihydroxybenzaldehyde, methoxyphenylacetic acid/ 2,3,4-trihydroxybenzaldehyde in NaOAc/Ac2O, respectively. 3-Aryl-6,7-dihydroxy-2H-chromenone and 3-aryl-7,8dihydroxy-2H-chromenone reacted with… (More)

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