Sc(OTf)<sub>3</sub>/BF<sub>3</sub>·OEt<sub>2</sub>-Catalyzed Annulation of 3-Formylchromones with Functionalized Alkenes: Access to Diverse 2-Hydroxybenzophenones
作者:Sabera Sultana、Peter Yuosef M. Rubio、Hari Datta Khanal、Yong Rok Lee
DOI:10.1021/acs.orglett.2c01538
日期:2022.6.24
ed annulation of 3-formylchromones with functionalized alkenes for the direct construction of 2-hydroxybenzophenones is described. Sc(OTf)3/BF3·OEt2 acts as a synergistic catalyst, providing rapid synthetic access to diversely and highly functionalized 2-hydroxybenzophenones. This reaction has excellent regio- and chemoselectivities and is suitable for late-stage functionalization. The reaction proceeds