CuX<sub>2</sub>-Mediated Halolactonization Reaction of Monoesters of 1,2-Allenyl Phosphonic Acids and Their Suzuki Cross-Coupling Reaction
作者:Fei Yu、Xiongdong Lian、Jinbo Zhao、Yihua Yu、Shengming Ma
DOI:10.1021/jo802051r
日期:2009.2.6
(X = Cl, Br) halolactonization of monoesters of 1,2-allenyl phosphonicacids is presented. The reaction proceeded smoothly under the mild condition for differently substituted allenic substrates giving the 4-halo-2,5-dihydro[1,2]oxaphosphole 2-oxides in good yields. The Suzuki cross-coupling reaction of these bromides and even chlorides with organic boronic acids under the catalysis of PdCl2(Sphos)2