Thionation of Chalcone and Aurone Derivatives by Lawesson's Reagent
摘要:
The reaction of Lawesson's reagent (LR 5) with chalcones (4a-h) and aurones (12a-h) proceeds in refluxing toluene to give the respective benzofuranylprop-2-en-1-thiones (8a-h) and benzodifuran-3-thiones (13a-h). Correct elemental analyses and spectroscopic data were obtained for the new compounds.