One-pot synthesis of sulfonyl dibenzosuberdiones <i>via</i> In(OTf)<sub>3</sub>-promoted double Friedel–Crafts reactions of oxygenated arylacetic acids with β-arylvinyl sulfones
作者:Meng-Yang Chang、Chun-Yi Lin
DOI:10.1039/d3ob00149k
日期:——
sulfonyl dibenzosuberdiones is developed via In(OTf)3-promoted tandem double Friedel–Crafts reactions of oxygenated arylacetic acids with β-arylvinyl sulfones. A plausible mechanism is proposed and discussed in detail. This protocol allows for highly effective sequential intermolecular Michael addition, intramolecular ring-closure and α-benzylic oxidation via the formation of two carbon–carbon single