Palladium-Catalyzed Asymmetric (2+3) Annulation of <i>p</i>-Quinone Methides with Trimethylenemethanes: Enantioselective Synthesis of Functionalized Chiral Spirocyclopentyl <i>p</i>-Dienones
作者:Zhi-Long Jia、Xian-Tao An、Yu-Hua Deng、Hui-Bin Wang、Kang-Ji Gan、Jing Zhang、Xian-He Zhao、Chun-An Fan
DOI:10.1021/acs.orglett.0c01252
日期:2020.6.5
A novel asymmetric catalytic (2+3) annulation of p-quinone methides with CN-substituted trimethylenemethane is described under palladium catalysis, providing an alternative approach for the enantioselective construction of highly functionalized chiral spirocyclopentyl p-dienones. Driven by the significant improvement in the reactivity and enantioselectivity, a novel type of non-C2-symmetric phosphoramidite