NMR spectroscopic structure elucidation of the products of the reaction of 3-(3-aryl-3-oxopropenyl)- chromen-4-ones with 1,2-phenylenediamine

Magn Reson Chem. 2006 Sep;44(9):856-60. doi: 10.1002/mrc.1863.

Abstract

The reaction of 3-(3-aryl-3-oxopropenyl)chromen-4-ones with 1,2-phenylenediamine resulted in the unexpected formation of 10a-aryl-1,2,10,10a-tetrahydrobenzo-[4,5]-imidazo[1,2-a]pyridin-3-yl(2-hydroxyphenyl)-1-methanones. Their structure elucidation and complete 1H and 13C assignments have been performed by a combination of various one- and two-dimensional NMR experiments.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzodiazepines / chemical synthesis
  • Benzodiazepines / chemistry*
  • Benzopyrans / chemistry*
  • Carbon Isotopes / analysis
  • Hydrogen / analysis
  • Magnetic Resonance Spectroscopy*
  • Molecular Conformation
  • Phenylenediamines / chemistry*
  • Stereoisomerism

Substances

  • Benzopyrans
  • Carbon Isotopes
  • Phenylenediamines
  • Benzodiazepines
  • Hydrogen
  • 1,2-diaminobenzene