Abstract
AbstractHerein, we report a novel protocol for the direct synthesis of 1,3‐oxathiolan‐5‐ones based on the (3+2)‐cycloaddition between thioketones and acetylenedicarboxylic acid. The products were obtained in a one‐pot reaction within short reaction times and in typically very good yields. The product structure was confirmed by X‐ray diffraction analysis.
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