Synthesis and Spectral Characterization of Some New 4-(2,6-Diarylpyridin-4-yl)-2H-chromen-2-ones

Abstract

Some new 4-(2,6-diarylpyridin-4-yl)-2H-chromen-2-one derivatives 5a–l have been synthesized by reacting 4-(3-oxo-3-arylprop-1-enyl)-2H-chromen-2-ones 3a–c with appropriate 1-(2-oxo-2-arylethyl)pyridinium bromide salt 4a–d in the presence of ammonium acetate in refluxing glacial acetic acid. The newly synthesized compounds have been characterized by elemental and spectral analysis.

GRAPHICAL ABSTRACT

Keywords:

• 2H-Chromen-2-ones
• coumarins
• Krohnke's reaction
• pyridyl coumarins
• Wittig reactions

Notes

Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/lsyc.