Synthetic analogs of natural flavolignans. XII. Synthesis of 3,5-diarylsubstituted pyrazolines based on 1,3-benzodioxane and 1,4-benzodioxane chalcone analogs
3,5-Diarylsubstituted pyrazolines were synthesized by reaction of 1,3-benzodioxane and 1,4-benzodioxane chalcone analogs with hydrazine hydrate. The structures of the products were confirmed by PMR spectroscopy.