the preparation of chiral C2-symmetric 1,10-phenanthrolines is reported. As an example of this procedure the synthesis of new 1,10-phenanthroline (+)-7 and its 5,6-dihydro derivative (+)-6 from (−)-β-pinene is described. These ligands have been assessed in asymmetric copper(I)-catalyzed allylic oxidation of cycloalkenes affording enantioselectivities up to 71%.
报道了一种方便快速的制备手性C 2对称的1,10-
菲咯啉的方法。作为该方法的一个实例,描述了从(-)-β-pine烯合成新的1,10-
菲咯啉(+)- 7及其5,6-二氢衍
生物(+)- 6。这些
配体已在不对称
铜(I)催化的环烯烃烯丙基氧化中得到评估,提供高达71%的对映选择性。