Palladium-Catalyzed [2+2+1] Oxidative Annulation of 4-Hydroxycoumarins with Unactivated Internal Alkynes: Access to Spiro Cyclopentadiene-Chroman-2,4-dione Complexes
作者:Shiyong Peng、Tao Gao、Shaofa Sun、Yanhong Peng、Minghu Wu、Haibing Guo、Jian Wang
DOI:10.1002/adsc.201300893
日期:2014.2.10
AbstractHerein, we report our new results regarding a palladium‐catalyzed [2+2+1] oxidative annulation of 4‐hydroxycoumarins with unactivated internal alkynes, which affords a new class of compounds: the spiro cyclopentadiene‐chroman‐2,4‐diones.magnified image