Abstract
One-pot green synthesis of (2-hydroxybenzoyl)(cinnamoyl)methanes has been performed by reacting 2-hydroxyacetophenones with cinnamoyl chlorides using activated Ba(OH)2, followed by Baker–Venkataraman rearrangement assisted by dual-frequency ultrasonication. Cyclization of (2-hydroxybenzoyl)(cinnamoyl)methanes using methanesulfonic acid along with dual-frequency ultrasound irradiation resulted in the formation of 2-strylchromones in a single step. The products were obtained with high yields, and their structures were confirmed by NMR and IR spectral data.
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