In the presence of a catalytic amount of Pd(OAc)2 and XantPhos, the three-component reaction of ynones, imines, and aryl iodides affords fully substituted alkylidene-furan-3(2H)-ones via a sequence of the Mannich reaction followed by chemo- and regioselective oxypalladation and reductive elimination. One carbon–oxygen and two carbon–carbon bonds are generated to afford the heterocycle in good to excellent
在催化量的Pd(OAc)2和XantPhos的存在下,
乙炔,
亚胺和
碘代
碘的三组分反应通过曼尼希反应序列提供完全取代的亚烷基-
呋喃-3(2 H)-酮。然后进行
化学和区域选择性羟帕拉汀作用和还原消除作用。产生一个碳-氧键和两个碳-碳键以良好的至优异的产率提供杂环。