A New Preparation of Substituted 4H-1-Benzothiopyran-4-ones from C(α),N-Benzoylhydrazones or C(α),N-Carboalkoxyhydrazones and Methyl Thiosalicylate

Academic Article

Abstract

  • C(α),N-Benzoylhydrazones or C(α),N-carboalkoxyhydrazones were dilithiated with excess lithium diisopropylamide, and the dianion-type intermediates were condensed with lithiated methyl thiosalicylate, followed by cyclization/hydrolysis to substituted 4H-1-benzothiopyran-4-ones (thioflavones/thiochromones).
  • Digital Object Identifier (doi)

    Pubmed Id

  • 25951467
  • Author List

  • French KL; Angel AJ; Williams AR; Hurst DR; Beam CF
  • Start Page

  • 45
  • End Page

  • 48
  • Volume

  • 35
  • Issue

  • 1