phosphoramidites is a paracyclophane scaffold in which two aryl rings are tethered by both a 1,8‐biphenylene unit and a O−P−O bridge. Suitable aryl substituents generate planar chirality. The corresponding gold(I) complexes promote the cycloisomerization of prochiral nitrogen‐tethered dienynes. These reactions afford bicyclo[4.1.0]heptene derivatives displaying three contiguous stereogenic centers
新型亚
磷酰胺的关键结构特征是对环烷骨架,其中两个芳基环同时被1,8-
联苯撑单元和一个O-P-O桥所束缚。合适的芳基取代基产生平面手性。相应的
金(I)配合物可促进前手性氮系二烯的环异构化。这些反应提供了双环[4.1.0]庚烯衍
生物,该衍
生物显示出三个连续的立体异构中心,具有非常高的非对映选择性和高达95% ee。